Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d2a6d49a54e30a2…

MALICIOUS

PDF

74.5 KB Created: 2021-02-24 21:49:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: f07eaff7b13d9989ac0da76681888adc SHA-1: 94d453ef07822a02f5a670963e7d4158b7799e60 SHA-256: 2d2a6d49a54e30a2d6ea1a52e28ac42e8c14abe0fac935ba46bc09629c9c1ad2
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the nature of the heuristics suggest the document is designed to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/award?keyword=ez+solar+loan+reviews PDF link annotation
    • https://palisuxil.weebly.com/uploads/1/3/1/0/131071308/705545.pdfIn PDF document text
    • https://cdn.sqhk.co/sajatanugeg/njeRxip/guardians_of_the_throne_codes.pdfIn PDF document text
    • http://snapchat-alert.com/nakusobowetovolakagh46uz.pdfIn PDF document text
    • https://zirilomeme.weebly.com/uploads/1/3/6/0/136025267/mudedipukad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497646/normal_5fd067a3b032f.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/55727874147.pdfIn PDF document text
    • https://fogisavelubid.weebly.com/uploads/1/3/5/2/135299906/7be65b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412161/normal_5fcf340e25201.pdfIn PDF document text
    • https://golinogejus.weebly.com/uploads/1/3/1/6/131606227/pudesekapopafitad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446382/normal_6001f1822c442.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bogalibamadom.myartsonline.com/12925552658.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/reloading_supplies_gridley_california.pdfIn PDF document text
    • http://zitejilid.epizy.com/anganwadi_vacancy_2019_in_delhi_form.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_off0000e7e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E3 4836 bytes
SHA-256: 23a7e0445aaf45fd52ca03d15425ca74d05c11dd0441cc0aeefa0876ea0fd56a
font_01_sfnt_off0000f880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF880 10956 bytes
SHA-256: edd23d8a5086225d9380aacc036f9dc0289ba81f4ab9eb1b4c917d5eb5087bf1

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