Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e22b8b2791bdf19…

MALICIOUS

PDF

68.6 KB Created: 2020-12-24 05:52:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 932a118da0c7529063f37ba00dee8eac SHA-1: 53e7bb631bcafa0a9503b95fb88fbd9b2bb6fff3 SHA-256: 6e22b8b2791bdf192d85cad1fc55aac6ccbb64d1c1c10cac761b64acdf53f08c
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, 'https://traffmen.ru/strik?utm_term=movie+manager+game', is flagged as a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'movie manager game'. No scripts were extracted, but the presence of multiple external links and the malicious redirector strongly indicate an intent to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/strik?utm_term=movie+manager+game
    • https://cdn.sqhk.co/mepetiruzi/jcBQjff/tegifebi.pdf
    • https://nibafowezibinax.weebly.com/uploads/1/3/4/3/134319588/morenob.pdf
    • https://cdn.sqhk.co/bofogarabu/jgXgfgi/86174328547.pdf
    • https://zipazoraxegav.weebly.com/uploads/1/3/4/3/134325660/pexidukapodem-marunowoba.pdf
    • https://zujuwedidikaf.weebly.com/uploads/1/3/4/3/134375258/e54d81.pdf
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/gedoda_moluzemarojen_gapexinutodizi.pdf
    • https://cdn.sqhk.co/dakagugi/rZ1hjif/i_am_monster_idle_destruction_mod_apk.pdf
    • https://babotiditufo.weebly.com/uploads/1/3/4/6/134694550/98af097aa.pdf
    • https://cdn.sqhk.co/febenanedibu/RArggjh/wwe_mayhem_mod_apk_v1._13._374.pdf
    • https://cdn.sqhk.co/bidomutarili/wjhghhd/fepigipozotabesoliv.pdf
    • https://xufidevudog.weebly.com/uploads/1/3/4/3/134389214/welorameg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tosevud/leluwixasenokovufobozagel.pdf
    • https://uploads.strikinglycdn.com/files/5c887421-5066-4e23-86ee-d930a6e09958/duxojirofizorojevovuwupev.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_off0000d281.bin
17296f96a300a77682df77c25201d220a7af25cd13921da495a36ceab236d506		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD281 4860 bytes
font_01_sfnt_off0000e306.bin
a40db53585e7e4c8215b81ea4514ea3d3b22d88395c2ae7619260bfce1165cd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE306 10220 bytes

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