Malicious PDF — malware analysis report

Static analysis result for SHA-256 69387f1c46f51a93…

MALICIOUS

PDF

85.9 KB Created: 2021-07-05 16:15:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 05045f2a53393a029808759d05f94faf SHA-1: 4bb6f1dba2dc55ba18b057e2f21eba83c251a0ca SHA-256: 69387f1c46f51a93f8aa8c10b375611870d0d367a9323ccde1c3e3a39b1d6b6e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other domains, likely serving as a distribution point for phishing or malware. The presence of multiple external URIs and link farm heuristics strongly suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://swaminarayangm.org/userfiles/file/26154443872.pdf In PDF document text
    • https://arichaindia.com/userfiles/file/mapolezetaxoxonuru.pdfIn PDF document text
    • https://iwnta.com/userfiles/file/5978385160.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160ba56f938a24---29777942350.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/16083a5e0dc5f0---93068098157.pdfIn PDF document text
    • http://allamericannursing.com/userfiles/file/92871799424.pdfIn PDF document text
    • http://chromowane.com/userfiles/file/20413406836.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/d5a3244d83405aee64a29d2438bc49cf/35916316102.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609a77d735fc6---tuneburekikogako.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160928dd17169d---62580757244.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983a124e232---39387145933.pdfIn PDF document text
    • https://777mto.info/contents//files/2879537340.pdfIn PDF document text
    • http://www.wiz-fac.com/uploadImg/file/gomipaloruwepuzunefopumiw.pdfIn PDF document text
    • http://wksystems.net/HotelEstimator/userfiles/file/72386628013.pdfIn PDF document text
    • https://moto-trend.cz/public/files/fck/file/teronodevonoxepite.pdfIn PDF document text
    • http://kpdb.org/userfiles/files/38504981691.pdfIn PDF document text
    • http://aptchasers.com/FCKeditor/userfiles/file/13706730092.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160822be876cae---tugus.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607564292c429---77096021104.pdfIn PDF document text
    • https://stallion-international.com/userfiles/file/77217746477.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/gq34hjndbs6gmbc5b3b7589731/galotapevatuma.pdfIn PDF document text
    • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/552cec028792c39b5c707e151fdbc629/31335026560.pdfIn PDF document text
    • http://1hozain.ru/files/userfiles/files/81665873985.pdfIn PDF document text
    • http://manhchenang.vn/webroot/img/files/dusatu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=just+standards+real+book+pdf+downloadPDF 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_off0000ecc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC3 10808 bytes
SHA-256: 6dfb9b6decb5a00e4fa4a5c7a5efd5e94bca57e22943613275ac02efde23ade6
font_01_sfnt_off000105b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011dc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC2 17100 bytes
SHA-256: ce7584140dfcfd4b2cbbb4a86e4f942f204fbb9ea679331c6978dbaf0ef85653

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