Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef9bb9609b099b9…

MALICIOUS

PDF

71.3 KB Created: 2021-02-26 09:02:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 1d9f370c36bef297fe2cb9c95b6759b3 SHA-1: ac4b70effe3ed0abf830cd5017a421722c6e8f31 SHA-256: 2ef9bb9609b099b910575a4598e95de71441b6f68c467f8795169f9a92aa3a7b
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The primary URL points to a car advertisement, likely a lure to disguise the malicious intent of directing users to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://druttle.ru/award?keyword=new+2019+toyota+camry+xle+for+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448550/normal_5fd94926bc3c3.pdfIn PDF document text
    • https://rigukolanerimi.weebly.com/uploads/1/3/4/5/134519373/dalaxidipo-gawubijapuju-gozejegu.pdfIn PDF document text
    • https://burivoren.weebly.com/uploads/1/3/4/2/134265934/tepategilesipirixok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461229/normal_5fce23b5e7e94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385230/normal_5fec1de1d65d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374983/normal_602ac130949da.pdfIn PDF document text
    • https://cdn.sqhk.co/fivukidado/7qgii19/53373260143.pdfIn PDF document text
    • https://teseresoj.weebly.com/uploads/1/3/4/6/134644138/muzevivezok.pdfIn PDF document text
    • https://kekulepolunan.weebly.com/uploads/1/3/4/8/134889268/mefidivuremeb.pdfIn PDF document text
    • https://wipedevibenisi.weebly.com/uploads/1/3/5/3/135315865/f2eb98.pdfIn PDF document text
    • https://wevozunivutuk.weebly.com/uploads/1/3/1/4/131484467/raxilazizalo_tuvominewux_zerasi.pdfIn PDF document text
    • http://lozajakar.iblogger.org/apple_music_songs_cost.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kaxukok/display_lettering_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/larifaju.pdfIn PDF document text
    • http://basefub.epizy.com/80958113226.pdfIn PDF document text
    • http://nefigubisi.epizy.com/73990131987.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD998 5740 bytes
SHA-256: 89d32db2bae615b8a6fe3ab55a1c286056a5468a5e9f7106430628a19bffad15
font_01_sfnt_off0000ed37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED37 10264 bytes
SHA-256: ba1baae371a529c415f0339e1ee0d77bbd6371947fccd57136feb4ea54e1e9db