Malicious PDF — malware analysis report

Static analysis result for SHA-256 a294c8c3cac6f028…

MALICIOUS

PDF

71.4 KB Created: 2020-11-25 21:46:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 518ada273d3d7fdbeb38de2a555b5c18 SHA-1: 7a0286b9eaa9301b8c3f06490ec48b0434d21fab SHA-256: a294c8c3cac6f0286d6764ee64f65e55dcec00a974fcfd9239abe5595e4e93dd
222 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to known malicious redirector infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the presence of a link farm indicate a malicious intent to redirect users. The 'SE_INVOICE_LURE' heuristic suggests a pretext for the user to click the link, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=other+receivables+do+not+include
    • https://cdn-cms.f-static.net/uploads/4475727/normal_5fa89f24ee8ca.pdf
    • https://vasinurevesodux.weebly.com/uploads/1/3/4/6/134605286/59c24734ea.pdf
    • https://cdn-cms.f-static.net/uploads/4368500/normal_5f89ff358e2e2.pdf
    • https://cdn-cms.f-static.net/uploads/4380413/normal_5f920472e00e9.pdf
    • https://zolegezuboz.weebly.com/uploads/1/3/4/4/134462972/592803.pdf
    • https://xesapexoxes.weebly.com/uploads/1/3/4/6/134633169/bupenadizaredan.pdf
    • https://gejeliruvuke.weebly.com/uploads/1/3/4/6/134699680/5cbfecc6.pdf
    • https://cdn-cms.f-static.net/uploads/4372080/normal_5f93b7439a0b4.pdf
    • https://cdn-cms.f-static.net/uploads/4404976/normal_5f994921e540c.pdf
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/suzaxiwela-gibirozuzo-sakorilufave-rasagi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/aceeaf64-092a-48a5-8ffc-7498224297c7/gaxegapesepapivelekifiki.pdf
    • https://uploads.strikinglycdn.com/files/481a876f-df65-481c-a1bd-38f529c6b5e4/nogugaxokolafilirozazoxe.pdf
    • https://s3.amazonaws.com/fosagobomap/the_academic_writer_a_brief_guide.pdf
    • https://uploads.strikinglycdn.com/files/7e0ec930-f89d-4442-ac35-68d7c6e9ee2e/vevafimatofonoxujun.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_off0000da1c.bin
6a047e35a1ba3b8c407c78e9663313a9b92b3919e9df9f1014aaab63ba3f00b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1C 5252 bytes
font_01_sfnt_off0000ebeb.bin
4dc12e22213e2b1690a0acbad1036b23a22d99c3f69b68c243465488e1e75bea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEB 10932 bytes

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