Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd141e99cde7e601…

MALICIOUS

PDF

41.7 KB Created: 2020-08-12 08:49:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b4d718e118758dc25b696d4d60efc89 SHA-1: d52ab3a50338b9161457778e3ab7f2efa9806c57 SHA-256: dd141e99cde7e60125cfa40b3a4b85eae8fcc9ef7ac08c03c6f6a966b1eee3ec
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a link farm designed to lure users to external sites, with one URL pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=anatomy+of+coronary+arteries+pdf, which is flagged as malicious. The presence of numerous external PDF links suggests a tactic to distribute malicious content or engage in SEO manipulation for malicious purposes.

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=anatomy+of+coronary+arteries+pdf
    • http://files.gogovernors.com/uploads/1/3/1/4/131406762/6528224.pdf
    • http://files.animationstationpodcast.com/uploads/1/3/1/1/131163563/4487555.pdf
    • http://files.saynomoremultimedia.com/uploads/1/3/0/7/130775727/dozomikev-soputefi-voxuwaparuvo.pdf
    • http://tedojo.pennengineeringpostframe.com/uploads/1/3/2/6/132683056/jusunixixituluzor.pdf
    • http://files.ministryoflove.me/uploads/1/3/1/1/131164402/7427275.pdf
    • https://cdn.shopify.com/s/files/1/0434/7291/2549/files/58044026256.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/mahatma_gandhi_biography_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/1688/0281/files/o_que__capitalismo_primeiros_passos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11383010616.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52733892229.pdf
    • https://cdn.shopify.com/s/files/1/0437/4793/4359/files/number_line_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6764/5857/files/klove_phone_number.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/69430064503.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/jutid.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063b6.bin
12ff8972e6a7c6dbea4fbc58064b839465f49b4b079b5c3763b017e06606fa80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63B6 5360 bytes
font_01_sfnt_off000075df.bin
8354f967648ec82c8703bb39159e898a5f894844361cfcbc3a222c72758f6b20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75DF 10468 bytes

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