Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17cd4200111f43c…

MALICIOUS

PDF

48.3 KB Created: 2020-08-14 20:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d26477efea197de188653ebd97c2480 SHA-1: c0c670c919181e4ca7756c8f6f1dc5963fa5e420 SHA-256: d17cd4200111f43cbc55bb809c370c4d194f9a7336c3776b0343dc7f1cde67ce
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=breast+cancer+awareness+in+nigeria+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise malicious content under a seemingly relevant topic. The presence of many external PDF links, including benign ones on Shopify, indicates a potential link farm or SEO poisoning attempt to distribute the malicious PDF.

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.
  • 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.
  • 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=breast+cancer+awareness+in+nigeria+pdf
    • http://files.microsoftconsult.com/uploads/1/3/0/7/130775732/4122f.pdf
    • https://cdn.shopify.com/s/files/1/0428/0667/3574/files/cub_cadet_1050.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/xorumutipisonutebip.pdf
    • https://cdn.shopify.com/s/files/1/0433/6526/9669/files/29349189411.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7703/files/zokijeniweroxafalewo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8407/8503/files/tamonisabefufu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7512/5919/files/toefl_ibt_reading_comprehension.pdf
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/jubutefipuzofonutega.pdf
    • https://cdn.shopify.com/s/files/1/0437/5147/3303/files/jidipezogujabuzinepa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/naray_information_communication_enterprise.pdf
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/kinonak.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/62247276136.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/69884684016.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0295/files/fasarox.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_off000070ba.bin
be0502ed9c88a94176cc039d9466480fe9ce90a38c608a500aee8821ceba791c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70BA 5112 bytes
font_01_sfnt_off00008239.bin
7e076b9b6017c4db0a22d1d08167e2ca5c9a484cfdad1696a44421fc3341cddd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8239 10444 bytes
font_02_sfnt_off0000a5e1.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E1 4324 bytes

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