Malicious PDF — malware analysis report

Static analysis result for SHA-256 362171de745efd62…

MALICIOUS

PDF

79.8 KB Created: 2021-03-03 06:55:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e70f37de053e55fd9d48448bff982b4a SHA-1: 244f8298f6878623da9fccd5e1d812c2f95b1a4e SHA-256: 362171de745efd62dc7b30f4edb9f95687f1ba5c81d1a9de2e4e5b68e20675cd
156 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many pointing to PDF files hosted on various platforms, indicative of a link farm or phishing campaign. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the presence of numerous URLs, including one with a 'strik' path, suggests the document is designed to redirect users to malicious content, likely for credential harvesting or further malware delivery.

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 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.
  • 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://jumiwimov.ru/strik?utm_term=the+invitation+oriah+mountain+dreamer PDF link annotation
    • https://subolamamojoga.weebly.com/uploads/1/3/4/7/134719430/lorirutuzapodixa.pdfIn PDF document text
    • https://nixejinalir.weebly.com/uploads/1/3/4/3/134321479/xowom.pdfIn PDF document text
    • https://xofiguguja.weebly.com/uploads/1/3/2/7/132710561/5848244.pdfIn PDF document text
    • https://volilisaxox.weebly.com/uploads/1/3/1/4/131453747/9660942.pdfIn PDF document text
    • https://lafefetakizin.weebly.com/uploads/1/3/2/7/132712235/fumunuridapozeri.pdfIn PDF document text
    • https://jizexukufi.weebly.com/uploads/1/3/4/1/134109318/gesabaseresi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393628/normal_5fe6cdbb58cfb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379491/normal_60212928b9306.pdfIn PDF document text
    • https://dudakodut.weebly.com/uploads/1/3/4/4/134497067/japojo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528915/normal_603df4ca113dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420761/normal_600b542fbcfcb.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/tajimipojimo/vusimefupaxid.pdfIn PDF document text
    • https://s3.amazonaws.com/jigezilor/market_research_template.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/77442281416.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/31609721385.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/memeboro.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/factual_report_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/azkoyen_palma_h70_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/33394345456.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_off0000fd9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD9A 4864 bytes
SHA-256: 07db761041e33473319cfae66b2e2dbbe1ec01ac4ae80f4f90f547888c82ac2d
font_01_sfnt_off00010df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF8 10400 bytes
SHA-256: 3d6937029cbe74aa1380f239a32aec43a8b042dcbb58ce1911c1f868fd119c90

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