Malicious PDF — malware analysis report

Static analysis result for SHA-256 94f0648c83e42e33…

MALICIOUS

PDF

114.7 KB Created: 2021-06-25 23:20:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 4fda5f74d5dd44f45566004b7b312b4c SHA-1: 14fff92120f228da2786bf195ab9d5ab760165f0 SHA-256: 94f0648c83e42e33174bfe86e96f2da3c83e9b1875323380f8d6284392627700
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites. These links likely lead to phishing pages or further malware downloads, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics. The presence of urgency language suggests a lure to entice users to click the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/80076b6b7e0ae947d54f1b710c6ac9a2/juzusibobixatipawetos.pdf In PDF document text
    • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/f2fd72ca373374aee854fe4657c5e552/69330734738.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088e087a1a09---42719590220.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c29ee6151f5---pewowomazawuwu.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/2051cd2d58a528550e75ffcb266e4700/lovepetogov.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac81d6c269---34502000054.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a11866a203a---fukovutowukavu.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/1db8b1d164c660b883d57ff7f94cda1d/rojukisatikixapomowozodi.pdfIn PDF document text
    • http://jshtextile.com/UserFiles/file///fesuluj.pdfIn PDF document text
    • https://777mto.org/contents//files/96938660140.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/a63nddjvffh2p3o35cc33cn0st/31934054498.pdfIn PDF document text
    • https://garyjetcenter.com/wp-content/plugins/super-forms/uploads/php/files/d6ca87e4263932a0e568c89888b6c47b/64648494724.pdfIn PDF document text
    • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/57adc92958d224a31f60a77bb1c5a27e/rubovotafitadigifevekuvi.pdfIn PDF document text
    • http://legendtec-eg.com/wp-content/plugins/super-forms/uploads/php/files/1pjb69uo9gqv7u0qirqcqgo835/57622386304.pdfIn PDF document text
    • http://biurod9.pl/public/userfiles/file/kojomiwajododapolije.pdfIn PDF document text
    • http://helloshoppingnepal.com/userfiles/file/50054264606.pdfIn PDF document text
    • http://www.doctor-carpet.com/wp-content/plugins/super-forms/uploads/php/files/g4e27s08cgjrvir54chmr8jp50/23727897213.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160a8ce7a55f14---87834047606.pdfIn PDF document text
    • http://rustproofingottawa.com/userfiles/file/katobelisuwifij.pdfIn PDF document text
    • http://www.ecostroyservis.ru/File/53472979422.pdfIn PDF document text
    • http://dailyliving.nl/ckfinder/userfiles/files/kuronejofaro.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160a3ad51e9fa5---28983488499.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/77970d5b6f50b0632d9b1c4013fe1894/bivuwenebu.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/6be7d1996229465d85da03341a51e2bb/jababuwemizegegosawe.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a365e233147---lulejon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=hypersensitivity+to+an+allergen+is+due+toPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F7D 10840 bytes
SHA-256: c0ea7be877a457b593005290758bf7fed11771805c9f1e864f85a9fa2d59025f
font_01_sfnt_off00017868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17868 17228 bytes
SHA-256: aa30daceb68e88a196a5a460f332bdaf2cbbb85fad9e965397da17e70c07ddd5
font_02_sfnt_off0001a4ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A4EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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