Malicious PDF — malware analysis report

Static analysis result for SHA-256 84179ba928a154ec…

MALICIOUS

PDF

72.7 KB Created: 2020-12-01 19:23:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5263b807063609a7a9ddeaafac631fc SHA-1: 5f05675fa2c43ba94e0f3dc1e84c38666b0f2067 SHA-256: 84179ba928a154ec350225165b964526b2e5a0273774a30f6e040f216c1d9ac3
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to lure users to external, potentially harmful, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gettraff.ru/123?utm_term=the+inquiry+movie
    • https://cdn-cms.f-static.net/uploads/4403540/normal_5fb86bf9636e6.pdf
    • https://bijupodenu.weebly.com/uploads/1/3/4/8/134894051/tukipofawi-latetaroki-vifarekavis.pdf
    • https://cdn-cms.f-static.net/uploads/4405929/normal_5fa2a78dbe392.pdf
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/xexibelovexe-moxoposob.pdf
    • https://cdn-cms.f-static.net/uploads/4378848/normal_5f8b10df5a0f0.pdf
    • https://cdn-cms.f-static.net/uploads/4443815/normal_5f9da4e253e47.pdf
    • https://cdn-cms.f-static.net/uploads/4477163/normal_5fa94ce353341.pdf
    • https://cdn-cms.f-static.net/uploads/4368497/normal_5f93b09fe9cb9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zepifudoxapo/89287985635.pdf
    • https://static1.squarespace.com/static/5fc4d6b6bf71053ccb290274/t/5fc532342dd96f591895e73e/1606758964137/genealogy_abraham_to_moses.pdf
    • https://static1.squarespace.com/static/5fc29af4e9fc3622d52d06da/t/5fc4f63b5147b14804ce4357/1606743612270/dateporujoxuwuwogup.pdf
    • https://static1.squarespace.com/static/5fc0ed1560f2895dc1e7fe11/t/5fc22c70145a8629dcf9819b/1606560881170/63518238845.pdf
    • https://static1.squarespace.com/static/5fc4fef36609fd0ee7abbd1d/t/5fc595165147b14804f26e4d/1606784278631/zatotejimakiji.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_off0000e168.bin
f7d20389fbc428586d5748b46e74e94e4e4e96716e3beac6cd97691e89b3f364		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE168 4744 bytes
font_01_sfnt_off0000f16b.bin
4bb1d54803ec6956027d0393f3e8dd981f2e3e56e5909a139bed0a9bd2603f38		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF16B 10820 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.