Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a001b74b251329b…

MALICIOUS

PDF

71.3 KB Created: 2021-01-01 00:40:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4d7f0da264287734ad23a640aad31d7 SHA-1: c7bfc904de71f0bcaa806ca6e6bad8326c46e716 SHA-256: 9a001b74b251329ba3bd7d0b140386bc7335948a529a3939b551649efed822b6
154 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The embedded URL, 'https://ggtraff.ru/strik?utm_term=real+gangster+vegas+crime+simulator+2+mod+apk', suggests a phishing or social engineering attempt, likely to deliver a secondary payload or lead to a malicious site. No scripts were extracted, but the PDF structure itself facilitated the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/strik?utm_term=real+gangster+vegas+crime+simulator+2+mod+apk
    • https://mesirurot.weebly.com/uploads/1/3/4/7/134706751/5465882.pdf
    • https://volifinidolil.weebly.com/uploads/1/3/0/8/130873876/dd1c628819f.pdf
    • https://cdn.sqhk.co/xalurubizud/fKjbWgf/pogamo.pdf
    • https://cdn-cms.f-static.net/uploads/4393893/normal_5f9d176c22e2e.pdf
    • https://cdn.sqhk.co/jetekujob/mmqhjjc/aliens_vs_pinball_download_free_pc.pdf
    • https://cdn-cms.f-static.net/uploads/4405181/normal_5faa82e2df5b6.pdf
    • https://static.s123-cdn-static.com/uploads/4426572/normal_5fdeed0c90466.pdf
    • https://cdn-cms.f-static.net/uploads/4368222/normal_5f89218d713a4.pdf
    • https://vujanakisa.weebly.com/uploads/1/3/4/4/134401771/8d6feea405d1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/rezugekolaba/simple_html5_responsive_website_templates.pdf
    • https://s3.amazonaws.com/lorifumofelu/ezreal_arurf_guide.pdf
    • https://s3.amazonaws.com/luborinizu/maplestory_m_weapon_guide_bishop.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_off0000cbe7.bin
72d5b186f0b7b415676129484166a4f6f00b174076158485d74267a459ecea5e
pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE7 5536 bytes
font_01_sfnt_off0000deb3.bin
48417113a50de0cc07efe22ec3e6aec4f5b855910271a4d78205f568639c1fdb
pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB3 10400 bytes
font_02_sfnt_off00010264.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x10264 4324 bytes