Malicious PDF — malware analysis report

Static analysis result for SHA-256 afb7ca80f5cb8b16…

MALICIOUS

PDF

72.5 KB Created: 2021-06-10 23:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3b816dc6628898238b1e0a302b755cd SHA-1: edbbb4d5a0aa5f9b3a6286c1d0178c65db01f950 SHA-256: afb7ca80f5cb8b1619fcee312bcc78a670ffaf55f378793c95c17e8eb1f00938
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a domain that appears to be used for distributing or hosting malicious content, potentially related to phishing or malware delivery. The document body, though heavily obfuscated, contains references that could be used as lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://garglob.ru/pbw?utm_term=the+chi+season+2+torrent
    • https://cdn-cms.f-static.net/uploads/4504922/normal_604ba1f473ee6.pdf
    • https://cdn-cms.f-static.net/uploads/4501989/normal_60bd885a2559f.pdf
    • https://xeravatiwawu.weebly.com/uploads/1/3/4/6/134603636/minatixanuxo.pdf
    • https://mewodufupojapoz.weebly.com/uploads/1/3/1/8/131857890/6c25cee8.pdf
    • https://tivufele.weebly.com/uploads/1/3/4/6/134615601/sumiwodi.pdf
    • https://tupakebu.weebly.com/uploads/1/3/5/3/135308645/6534169.pdf
    • https://static.s123-cdn-static-d.com/uploads/4475847/normal_60b0b2a3a2808.pdf
    • https://static.s123-cdn-static.com/uploads/4495858/normal_5fce3a881c3dd.pdf
    • https://cdn-cms.f-static.net/uploads/4377400/normal_60587d9f94570.pdf
    • https://static.s123-cdn-static.com/uploads/4417216/normal_5fde9efa50470.pdf
    • https://nozifudofo.weebly.com/uploads/1/3/2/6/132681081/4288525.pdf
    • https://cdn-cms.f-static.net/uploads/4402722/normal_60254ff9d432b.pdf
    • https://cdn-cms.f-static.net/uploads/4478926/normal_60194eed72127.pdf
    • https://static.s123-cdn-static.com/uploads/4406229/normal_5fc5ea6617499.pdf
    • https://static.s123-cdn-static.com/uploads/4392474/normal_5ff4778084459.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gitixofipoxu.pbworks.com/w/file/fetch/144894585/ali_and_the_forty_thieves.pdf
    • https://uploads.strikinglycdn.com/files/c4aa5633-7609-4cc3-a0d5-ad90a2389c1a/dadax.pdf
    • https://uploads.strikinglycdn.com/files/eb286fc6-d62f-4091-81e6-bf6c7869cf97/libros_de_gramatica_ingles_gratis.pdf
    • https://uploads.strikinglycdn.com/files/3009118c-6fbc-4f50-b967-abeec7663c9c/50_essays_4th_edition_table_of_contents.pdf
    • http://visetululiv.pbworks.com/w/file/fetch/144422145/subaru_forester_manual_transmission_years.pdf
    • http://vuxagekume.pbworks.com/w/file/fetch/144991731/81407612948.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e00a.bin
f3a03cfb57c40925dc3486f519ee2593af21601c563aa11a5510d23f5c2bc1e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE00A 4936 bytes
font_01_sfnt_off0000f0cb.bin
d66799992f86e4745bf7d05080b4a2236679b0ecd2a2bcf57d3edd7032a3cb7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CB 10620 bytes

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