Malicious PDF — malware analysis report

Static analysis result for SHA-256 f70fc765da089a4b…

MALICIOUS

PDF

39.7 KB Created: 2020-08-22 17:41:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83ace216bd86322d37226d16d69a4340 SHA-1: 42981e02c0d8bbd76e54a1147eaf644e5d62aaf9 SHA-256: f70fc765da089a4ba2060be2126a269e26a923de7c5712389f91075900efcace
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking title related to diabetic ketoacidosis, suggesting a lure. No scripts were extracted, limiting the analysis of further stages.

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.com/pify?keyword=traitement+de+l%2527+acidoc%25C3%25A9tose+diab%25C3%25A9tique+pdf
    • http://lexobop.androscogginriverwalk.org/uploads/1/3/2/3/132303035/napapudetira.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/gibadupiximi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/50650384350.pdf
    • https://cdn.shopify.com/s/files/1/0433/4338/0631/files/monster_manual_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9704/6696/files/31356253517.pdf
    • https://cdn.shopify.com/s/files/1/0433/5714/3205/files/javivure.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/3330976236.pdf
    • https://cdn.shopify.com/s/files/1/0430/1013/0073/files/kajuvil.pdf
    • https://cdn.shopify.com/s/files/1/0430/9375/4009/files/niratogo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2344/0799/files/85086916706.pdf
    • https://cdn.shopify.com/s/files/1/0428/0755/8310/files/70502022327.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_off0000587f.bin
36bcb1d3d8d4d7b2c317a1252c391bbfc3a445f3db8d10b529cbcb64f2c831c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x587F 5692 bytes
font_01_sfnt_off00006b77.bin
fde153e5488543ab9d4df829e104c405c4d6e133a6a1052b7521a59151a5a2ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B77 11608 bytes

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