Malicious PDF — malware analysis report

Static analysis result for SHA-256 22fea8ebc274bbb3…

MALICIOUS

PDF

43.4 KB Created: 2020-08-27 16:13:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 793269378449b67d10191bdead0df0a2 SHA-1: 52cc41fa8ee3fa77d5e50fb6e793d86c3e942d40 SHA-256: 22fea8ebc274bbb36850ac23ad89a0c56360ec0a2d4a24e2109b74cecabce926
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=calculateur+de+factorisation+avec+etapes'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into clicking it. The document also contains a large number of external PDF links, many hosted on Shopify, which is flagged as a PDF link farm. The primary malicious URL is the most critical IOC.

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.cc/pify?keyword=calculateur+de+factorisation+avec+etapes
    • http://files.mitacron.com/uploads/1/3/1/6/131636914/2c3d295daa762.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/gerususun.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8453/files/christian_bible_study_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/vamalinobul.pdf
    • https://cdn.shopify.com/s/files/1/0436/9435/8681/files/18631711286.pdf
    • https://cdn.shopify.com/s/files/1/0440/4514/0118/files/59431461967.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7254/files/philosophy_for_understanding_theology.pdf
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/wafobojoduwefivefevimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/eular_guidelines_lupus.pdf
    • https://cdn.shopify.com/s/files/1/0432/0346/1283/files/34648080039.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1660/files/gadewitobotabotuwuxemileg.pdf
    • https://cdn.shopify.com/s/files/1/0431/8576/6564/files/amour_sucre_episode_23_guide.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_off000059ea.bin
3a1a5b4a9217cf59a28677c4724d1f02dc3e68e835df22a33b77905db8fb6bb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59EA 5116 bytes
font_01_sfnt_off00006b62.bin
da1bfb70ed97db76649125fcfe783c6583ca9ec4f1171c4ba6613c1634fd0686		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B62 11780 bytes
font_02_sfnt_off00009113.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9113 4324 bytes

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