Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a0b41ef236efbb…

MALICIOUS

PDF

80.8 KB Created: 2021-03-09 02:53:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5206eed00b2ddc8d8ca0d8e58045f92d SHA-1: 0b2e843a9a684ba68518b964ff4f09dbea7b1bf0 SHA-256: c2a0b41ef236efbb5f72f335ba64262f9bac271fe9b46cad4e1e73d73f9af6ec
96 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'bologen.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are strong indicators of malicious activity, likely involving the exploitation of PDF vulnerabilities or social engineering.

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://bologen.ru/wix?keyword=joshua+halling+neck+deep
    • https://cdn.sqhk.co/kagitenoru/jdYfhaO/31707850573.pdf
    • https://nebobaxewakizix.weebly.com/uploads/1/3/1/6/131637309/8929288.pdf
    • https://tudegikugil.weebly.com/uploads/1/3/5/3/135317618/6929826.pdf
    • https://static.s123-cdn-static.com/uploads/4402707/normal_5fcea6b62f8f7.pdf
    • https://cdn.sqhk.co/nolagutotato/jb6PGfW/rangers_of_oblivion_wikipedia.pdf
    • https://cdn.sqhk.co/xamizine/j6ib7ja/33552398877.pdf
    • https://cdn.sqhk.co/siduniberame/gdgiwPV/rifokajutolade.pdf
    • https://cdn.sqhk.co/sabiwizi/mhevhfj/sofutulimetezuxofutuva.pdf
    • https://cdn.sqhk.co/midipijikami/wGjaO5Q/14312466436.pdf
    • http://zobebukore.22web.org/57766628282.pdf
    • https://fitikuwez.weebly.com/uploads/1/3/2/6/132681307/metutudatexekuz.pdf
    • https://ditoleruv.weebly.com/uploads/1/3/5/3/135345680/7223785.pdf
    • https://static.s123-cdn-static.com/uploads/4453102/normal_5fcd59200c70c.pdf
    • https://cdn-cms.f-static.net/uploads/4413013/normal_602b4b69c83b8.pdf
    • https://cdn.sqhk.co/rukeditele/ogehilM/sopugifiwid.pdf
    • https://cdn-cms.f-static.net/uploads/4476436/normal_6028ee01ace43.pdf
    • https://pafajawu.weebly.com/uploads/1/3/2/6/132682051/nenidul.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kokiralasido.epizy.com/kadozukob.pdf
    • https://uploads.strikinglycdn.com/files/5273e018-cb41-4aa8-b7ce-08c8586a0481/lenuf.pdf
    • https://uploads.strikinglycdn.com/files/6ce48e5e-9d1c-4f44-8d11-7f22a0adc3e7/megikusesu.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_off0000ff72.bin
e5f71c057cb6ffaf7da427208b9762c437001e417070f26f37580b8c34c78745
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF72 5292 bytes
font_01_sfnt_off00011170.bin
5c4203c9c1db903419e0c46f3ddf7e4e03fde8f3288321c90fcdf00fadb06294
pdf-font-stream PDF embedded font (sfnt) at offset 0x11170 10712 bytes