Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e531d9822f87be6…

MALICIOUS

PDF

69.3 KB Created: 2020-12-07 00:31:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c7f92b4fc487f80f10b05ac1be7ea372 SHA-1: 0324355b7d5b0472224f5638817cbd1f06df5538 SHA-256: 7e531d9822f87be6738a48427208afa9cf09c412f6169c966d6bbc7f9b0f6a49
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to 'traffking.ru', which is highly suspicious and likely serves as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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.
  • 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://traffking.ru/strik?utm_term=valentine%2527s+day+lesson+plan+objectives In PDF document text
    • https://static.s123-cdn-static.com/uploads/4413370/normal_5fc825a00b9bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409255/normal_5fae78eaeeeeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416513/normal_5fc0c83e5cff4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/123055d9-44e9-471c-904c-1c1829cf2289/tera_brawler_dps_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e7ad6609fd0ee79153f2/t/5fc360019b1ed03538481db6/1606639617437/all_your_worth_the_ultimate_lifetime_money_plan.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56ff188c99b6d37c5dc1c/t/5fc665f63c02f22b9de83335/1606837753607/nijuboxusovepumad.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4e4b9ee0f32b874a201d/1606372950977/heart_of_worship_guitar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1feb5fac-c99f-46f1-b1c8-01b5b19b4805/woparinumufudik.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd3c824b06a7eb3f8da22/t/5fca22ee3ff94c207e11a340/1607082737378/tipet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbaa4e13-0cef-4ed6-ac53-428f0f2865e6/74036700491.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1701a3dfdd95b60d8e131/t/5fc3af359d79364840fe58d4/1606659893401/susan_anne_christman_obituary.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c3d560f2895dc1e72903/t/5fc1f095e6d49a06bbd81d77/1606545558425/pugawabawetutazisezazeka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a905b57b-5322-4a84-b8c7-f5ff3475e2aa/rome_total_war_2_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5a97fa04221c711795e5/1606376088454/goromivelebajefe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D0 5348 bytes
SHA-256: b4c86e13a78ae1094f22aee8f6b6443b71af1145c7a80098b511ae5fff1e156a
font_01_sfnt_off0000e52e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52E 10376 bytes
SHA-256: 799d02c9d9cffcd9c7cc859c15e659e4eeab7e4389e6f3c2d5f4701dc6134b78

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