Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb2d4e7dc08b9d8…

MALICIOUS

PDF

76.6 KB Created: 2021-02-27 05:29:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 8c8d593efd36a3508f43d3afe61fe6de SHA-1: 30f90994d4a43f4ce9ef593811843d6555f030fd SHA-256: eeb2d4e7dc08b9d8e971a123a19d0fbf090176232cb51d0896c560e301121d0b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://botokaw.ru/strik?utm_term=what+does+carriage+return+mean+in+python PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450354/normal_603014a816368.pdfIn PDF document text
    • http://timelessdecorum.com/project_manager_experience_letter_template3f75c.pdfIn PDF document text
    • http://steblin.pro/how_to_change_ipod_name_without_itunesrwdod.pdfIn PDF document text
    • http://yazansoft.com/ap_welfare_schemes_in_telugu8w8to.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxosutuku/jdie6uH/63981185483.pdfIn PDF document text
    • http://pumba.fun/bombay_jayashree_tamil_songsxydwu.pdfIn PDF document text
    • https://dugigoje.weebly.com/uploads/1/3/4/7/134754128/4975627.pdfIn PDF document text
    • https://kifeketefisub.weebly.com/uploads/1/3/5/3/135347095/5322614.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460446/normal_5fe90af0ae085.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380229/normal_6007fcb1e95f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421336/normal_5ff19657aacf6.pdfIn PDF document text
    • http://leree4.club/15072027748ym9jm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rajamuviw.epizy.com/bolne_wali_billi_ka_apps.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA6 5452 bytes
SHA-256: 15ca6147af38c545795ac7bef693a67a6a603a341ee3806210ccc9858bde604a
font_01_sfnt_off0000f112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF112 11228 bytes
SHA-256: b2e45b2063ad1ab63b361306e7099221e94aaba28acab0422c212aa220bf0cc6
font_02_sfnt_off0001179a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1179A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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