Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f8292b7f0035673…

MALICIOUS

PDF

94.7 KB Created: 2021-07-21 17:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 14af871c99da70f699ba10467d4e51f3 SHA-1: f48bac439b6fa5a2876a01d752c770f5113ad49e SHA-256: 7f8292b7f0035673756736622a88aca30334f0e1083c6c3aec6880eb428019f7
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites, suggesting a phishing or malware distribution scheme. The presence of multiple distinct hosts and the use of disposable hosting further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608634f50d636---nekovubomaduruwuvebil.pdf In PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607570ac1082f---51540708636.pdfIn PDF document text
    • http://daotaoyduoc.org/wp-content/plugins/super-forms/uploads/php/files/f0p4vcjknm122tcdfts4gh7qr7/83454602898.pdfIn PDF document text
    • https://actor-conseil.com/files/file/woriselowexuzaforewen.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/f0552fc4f33955bdfb4aec950ade4b1a/monuju.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec981ad9678---bazokikubibagobojomat.pdfIn PDF document text
    • https://aronabritcan.com/userfiles/file/46134854337.pdfIn PDF document text
    • http://tykhestudiodesigns.com/clients/7/73/7311521ca682816632878891c231d107/File/xofud.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/29a4f24d8fc38a0bf4c455407d2c475e/15107042931.pdfIn PDF document text
    • http://essuances.com/ckfinder/userfiles/files/wojafavovanepexagibu.pdfIn PDF document text
    • http://denis-lefebvre-services.com/fichiers/file/11864394581.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf4b5c72bb2---53538579132.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/67dd4fc8af92bb0d3c019b0788c29bbc/71733852317.pdfIn PDF document text
    • http://hz-karavany.cz/ckfinder/userfiles/files/kurupapemokufimexaxe.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b76a00b7556---kofodav.pdfIn PDF document text
    • https://oddluzanie.net/userfiles/file/wawaloxinowewu.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160958df0eaca7---koremovaxolulapamifaruteb.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160784e2abfd09---10065837501.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608850bdba205---jabebe.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/bj1vni31itgbc75h0fvevg5v9u/1783886277.pdfIn PDF document text
    • https://zoldlepes.hu/userfiles/file/foxameremazo.pdfIn PDF document text
    • http://stroisvias.ru/userfiles/file/jiwavujinudoziwega.pdfIn PDF document text
    • http://gruppocinofilomarsalese.com/userfiles/files/lexotunevo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=crazy+town+butterfly+red+hot+chili+peppersPDF 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_off0001038e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1038E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA0 20796 bytes
SHA-256: b64262984d32c8eb346db609c13769ab5fc5449950ee1d3afb9eb7334e3493bf
font_02_sfnt_off000150e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150E5 11248 bytes
SHA-256: 78fc14c35dcd81b9bb077899806085f9065e7b64a56c43d66363ae837cecb8da

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