Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c9f6b1d3ab95ed…

MALICIOUS

PDF

69.7 KB Created: 2020-12-28 02:49:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7eb24b937ea3bb843f999d3d2f31df88 SHA-1: 3092806ccd548d855240d7975bd7c39d54d08ade SHA-256: 01c9f6b1d3ab95ed072789b886c914beb08de064eec537fb478a8c115819a325
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Link T1059.007 JavaScript

The PDF contains a critical heuristic firing for brand-impersonation credential phishing, specifically targeting Gmail. It directs users to a malicious redirector URL hosted on weebly.com. Additionally, the PDF includes a link farm heuristic, suggesting it may be part of a larger SEO manipulation effort to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://tujezagen.weebly.com/uploads/1/3/4/7/134775207/fanudefulumuf-wugumitekutopeb-xigoxu-nudikobe.pdf.
  • 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://traffset.ru/strik?utm_term=photo+warp+tool+online PDF link annotation
    • https://tujezagen.weebly.com/uploads/1/3/4/7/134775207/fanudefulumuf-wugumitekutopeb-xigoxu-nudikobe.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/roriturosiw.pdfIn PDF document text
    • https://xalesuben.weebly.com/uploads/1/3/4/3/134368019/a96f69.pdfIn PDF document text
    • https://malugerimume.weebly.com/uploads/1/3/4/8/134846891/rofofuboz_jatelopife_xosuro.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/fosalizuzu/ielts_reading_sample_test.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/10516469735.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/nutopetanefav.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/62028146709.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/fundamentals_of_molecular_virology_nicholas_h._acheson.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/battlefield_of_the_mind_joyce_meyer.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/hyper_stats_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/18176987265.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/fodaxopogivolenesapige.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/manosawarikosogelaja.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD59F 4824 bytes
SHA-256: 11e38f77c48b3794ebf2fd1145689f289a35ce0f9181c5609f30b4b16bbf93a4
font_01_sfnt_off0000e610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE610 10536 bytes
SHA-256: 16bc0cda243d07e867fecf3177ad1e9c1ab8f76b851aea4f5c916a9ec049f33e

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