Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7095c07c99db4a4…

MALICIOUS

PDF

80.6 KB Created: 2021-04-08 07:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a62d70fd4599d40b8d963d3f6b72080d SHA-1: 92b370510baeb62a7479b55246e23e55f5ab2ae4 SHA-256: f7095c07c99db4a4f84084d59981c2e5af7431c81544f8b3fd7afe498a3a8aec
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that points to a suspicious domain, likely a phishing lure. ClamAV and ML classifiers also flagged this PDF as malicious. The presence of embedded URLs and the overall malicious classification strongly suggest a phishing attack vector.

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://seumenha.ru/strik?utm_term=sharp+lc-60le650u+specs
    • https://cdn-cms.f-static.net/uploads/4389085/normal_60692ca720bab.pdf
    • http://zobotalemogi.sportsontheweb.net/vatidebogidosupojul.pdf
    • https://cdn-cms.f-static.net/uploads/4418166/normal_601e880c46870.pdf
    • http://forisawidokomor.sportsontheweb.net/argumentation_and_debate_12th_edition.pdf
    • https://cdn-cms.f-static.net/uploads/4474206/normal_602628e644828.pdf
    • https://cdn-cms.f-static.net/uploads/4424011/normal_600a481e6b99b.pdf
    • https://cdn-cms.f-static.net/uploads/4486748/normal_601fb8bc99e0a.pdf
    • https://static.s123-cdn-static.com/uploads/4473049/normal_5fcaa19bdc219.pdf
    • https://cdn-cms.f-static.net/uploads/4376619/normal_60315c45bb78e.pdf
    • https://static.s123-cdn-static.com/uploads/4387699/normal_5ff26b0fc38a4.pdf
    • https://cdn-cms.f-static.net/uploads/4377935/normal_60327d9e49335.pdf
    • https://static.s123-cdn-static.com/uploads/4403565/normal_5fe30b226626c.pdf
    • https://static.s123-cdn-static.com/uploads/4494451/normal_5ff0dab21ef08.pdf
    • https://cdn-cms.f-static.net/uploads/4459629/normal_600bbb887937d.pdf
    • https://static.s123-cdn-static.com/uploads/4487187/normal_5fde723d5190c.pdf
    • https://cdn-cms.f-static.net/uploads/4373304/normal_604dd2f2e24ac.pdf
    • https://static.s123-cdn-static.com/uploads/4455399/normal_6006a37d7c480.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jeworurowam/dotnet_interview_questions_for_5_years_experienced.pdf
    • https://s3.amazonaws.com/bakoloj/girl_scout_cookies_outdoor_grow_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee7.bin
ddd3f06ed2e9d1ede32a916e91f79bfc331bcda9372a00ca12063e449eb8a11b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE7 5116 bytes
font_01_sfnt_off00010050.bin
3e0670dbfa7627ab9dd9b243f78f7ee1ac2c143c4a7e75ca16deeefa1e91e7dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x10050 11452 bytes
font_02_sfnt_off0001275b.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x1275B 4324 bytes