Malicious PDF — malware analysis report

Static analysis result for SHA-256 282addaabbb46504…

MALICIOUS

PDF

82.3 KB Created: 2021-09-01 08:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: aeb1e9298345ccd1428d9d36d562379c SHA-1: 34025aac390696da3474f20d4a9397861c11b65d SHA-256: 282addaabbb4650440b9df1a8dfe72c041ecf96660a62430e42591828773bdf6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, pointing to numerous compromised websites and disposable hosting domains. These links likely lead to phishing pages or further malware downloads, consistent with a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • 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.
  • 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://drafthe.ru/uplcv?utm_term=fort+collins+vehicle+licensing PDF link annotation
    • http://libertyquad72.fr/userfiles/file/mifafixozitivilusirojolid.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/d9130d6b88694a55257c38c5e215bda4/putikatodu.pdfIn PDF document text
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/09c0391f52a3d078ed2b299b0d56bbf8/55719543334.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/40f706b82592e8f0d418ee3e273b604a/39300298607.pdfIn PDF document text
    • https://bataretak.com/img/files/file/96344324846.pdfIn PDF document text
    • http://skiflogistics.ru/userfiles/file/lebudojuvibumowojav.pdfIn PDF document text
    • http://alessandrobelleseveterinario.eu/userfiles/files/vefusadegizasixokuwirebas.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/q1pdcsf61u9n1lok4bajn1qebl/tumigu.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16086b17a43592---borepawuwikuf.pdfIn PDF document text
    • http://pincailight.com/zk/UploadFile/file/2021070708355473499.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16088bf5f020ac---wolununamabogela.pdfIn PDF document text
    • https://sonerofset.com/userfiles/file/15798435761.pdfIn PDF document text
    • http://chrislahoda.ca/userfiles/file/10657689941.pdfIn PDF document text
    • https://energiadirect.pl/application/resources/ckfinder/userfiles/files/65815177421.pdfIn PDF document text
    • https://www.douggoodkin.com/admin/ckfinder/userfiles/files/nodawalufibomonotim.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160948175bccf8---fuxujoxoxejenejatogodigav.pdfIn PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/1k022t944bca8vak3rvhg8ls74/juraxaworusis.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160858aa3a526d---50356241854.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/t4aq01jr6k4ea4gq1qughbcrdd/figenisupujanumisu.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/lejujokes.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/8db9ea56c5069046699ee5f9a4348abd/jokorotijubesu.pdfIn PDF document text
    • http://zbraneklapka.cz/ckfinder/userfiles/files/34559248558.pdfIn PDF document text
    • http://japan-railpass.info/images/blog/file/moxivufuvufudirigifobifo.pdfIn PDF document text
    • http://futuralagoparking.eu/userfiles/files/sugara.pdfIn PDF document text
    • https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/677c0cefc00c3993b15d47341c70d4d1/77831293509.pdfIn PDF document text
    • 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_off0000daca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDACA 18664 bytes
SHA-256: cb57521ec071a4b7dfd41a6742a7f5082ac702122f58d006091c393ebd36ede0
font_01_sfnt_off00010bd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000123e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123E7 10388 bytes
SHA-256: 0af393332dc467d6b5e646d33d82370685ca2f96bda546934d94d711b6ec4d98

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