Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a7025046df604c0…

MALICIOUS

PDF

80.5 KB Created: 2021-04-25 08:39:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f847591b97b91b729323693b4a161ac7 SHA-1: 67f950170331bbdb5e32f36789c034a9e52127a4 SHA-256: 0a7025046df604c0385e1ab116048ae4f2665b801bbbc3a0957cb98ca0c9dee1
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that masquerades as a search result for a movie cast, likely to trick users into clicking it. The PDF structure itself is also suspicious, with duplicate object definitions, suggesting obfuscation or malformation.

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://golowaki.ru/strik?utm_term=romeo+and+juliet+movie+cast+1968
    • https://static.s123-cdn-static.com/uploads/4410206/normal_5fcbfa1888d21.pdf
    • https://cdn.sqhk.co/muvotugi/jagfih7/best_nail_polish_brands_for_water_marbling.pdf
    • http://pejojatodaja.iblogger.org/solve_and_graph_inequalities_worksheet_7th_grade.pdf
    • https://cdn.sqhk.co/burexewejam/ifcZVA3/26453151667.pdf
    • https://cdn.sqhk.co/sifalavuxozo/hbMibgi/crabapple_tree_guide.pdf
    • https://cdn-cms.f-static.net/uploads/4387061/normal_6027e0476ef20.pdf
    • https://cdn-cms.f-static.net/uploads/4382958/normal_6025c8b063ddf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4f2d2356-6826-490a-9e03-b154cde4565b/xisozezidebovuzuvan.pdf
    • https://uploads.strikinglycdn.com/files/bffad081-3368-4272-b509-535950198016/vewekamotugalusek.pdf
    • https://uploads.strikinglycdn.com/files/cdbbcf47-d305-422a-a715-01b1e72c0037/how_to_fix_breville_coffee_grinder.pdf
    • http://nanoxujam.epizy.com/jofuvoxepoxesiraz.pdf
    • http://gizimup.epizy.com/amharic_bible_iphone.pdf
    • http://gasigigi.rf.gd/cypher_language_cheat_sheet.pdf
    • https://uploads.strikinglycdn.com/files/c4a8745c-078c-4c49-880e-a867a5f21572/wezuberunojeze.pdf
    • https://s3.amazonaws.com/kegubinefuda/44368107691.pdf
    • https://s3.amazonaws.com/bajapovogam/graffiti_reading_answers_ielts_practice_test_6.pdf
    • http://xuposusan.epizy.com/handwriting_worksheets_3rd_grade.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_off0000f972.bin
6bd1185d95152cac0c2a79b4362fbc0430e55844ed7649e494a1811d1cdfb125
pdf-font-stream PDF embedded font (sfnt) at offset 0xF972 5688 bytes
font_01_sfnt_off00010cc6.bin
d308b4bf88131497a6fb667da6fd210116e5dc39f3ad4b8d7bd6f82eca5c0563
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CC6 11564 bytes