Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d3adf9ec4540ea2…

MALICIOUS

PDF

42.2 KB Created: 2020-08-15 03:40:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6847297d03f499ee530729766cf10861 SHA-1: 98dd6ce20ba4d1eb0fa9e82096aaee0bbf4e3b79 SHA-256: 9d3adf9ec4540ea213f4b6f309a9f7fcf6663f7f46ba76970463664d338695b1
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one heuristic specifically flagging it as a malicious redirector. The document body, though partially corrupted, contains a URL that aligns with the malicious redirector finding. The presence of a callback lure suggests a phishing or social engineering attempt. The file is identified as a PDF and contains numerous links, indicating a potential delivery mechanism for further malicious activity.

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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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://ttraff.ru/pify?keyword=sigmoidoscopy+screening+guidelines
    • http://files.theartoftree.com/uploads/1/3/1/3/131379049/belijanisaraxo_texufoxizir.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/chikki_mukki_movie.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/60264080122.pdf
    • https://cdn.shopify.com/s/files/1/0431/1112/1057/files/xavepirerifupizinusob.pdf
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/57866614420.pdf
    • https://cdn.shopify.com/s/files/1/0431/0591/0933/files/bugewakesininebirebuposi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1373/4563/files/86207421401.pdf
    • https://cdn.shopify.com/s/files/1/0440/7033/8725/files/bifibuxojelu.pdf
    • https://cdn.shopify.com/s/files/1/0454/7198/9918/files/ziwaduganu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/piwakapix.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/37028583119.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059f4.bin
80b2cf9579adff1a7fc6be28e316b640bde350f7d26949d2c916286d834d1846		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59F4 5188 bytes
font_01_sfnt_off00006b77.bin
8abd4a0c56711e0d94c4b18023ed22b5445cdf51f629bd28b55cd91ea2da7fd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B77 10172 bytes
font_02_sfnt_off00008e3e.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3E 4324 bytes

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