Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b10f1238ab0c37a…

MALICIOUS

PDF

73.1 KB Created: 2021-02-24 00:49:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: feb6350374601b71bb1460361085434a SHA-1: 29925495e32716db91464ae521e702fc6eb69af0 SHA-256: 9b10f1238ab0c37ab29a698e0dfbb7fc802bae13cffce92d00970b5a18c35192
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'baarspo.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a movie title, likely to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/123?utm_term=is+there+a+divergent+allegiant+part+2 PDF link annotation
    • http://jasapremium.xyz/59025829393f0pf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450878/normal_5ffac62db241b.pdfIn PDF document text
    • https://cdn.sqhk.co/fakosopalo/jihdMAQ/65252883878.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478137/normal_60154605d26e8.pdfIn PDF document text
    • http://sks-expertiza.ru/9645691045842sk0.pdfIn PDF document text
    • https://cdn.sqhk.co/dojagomudek/aXmAjgp/67237099368.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirorig/hdjiDia/virus_protection_for_my_computer.pdfIn PDF document text
    • http://skout.tech/15761823441roq5q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449627/normal_5fdec43b571cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403128/normal_5fd68521a55b1.pdfIn PDF document text
    • http://digitalliteracyinstitute.com/kipapige3g256.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405194/normal_5fca57721db21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454971/normal_601a2a53a06d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369327/normal_602f600b4731a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409092/normal_600e07c771e5e.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/N3hbKhj/bass_pro_shops_springfield_mo_human_resources.pdfIn PDF document text
    • https://cdn.sqhk.co/mopijiluxu/hikGFia/digital_marketing_strategy_plan_example.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000de00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE00 5352 bytes
SHA-256: 52ea4d3dc20b530aef391fd28d93d66765d97c4f8157d112998b66f0391f32d6
font_01_sfnt_off0000f033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF033 11024 bytes
SHA-256: d96635d7ae4aa5c38c8c50b4bdb2571c8b26167c7d7b1dd0e00950f7471fe403

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