Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f210fc9e5158235…

MALICIOUS

PDF

53.0 KB Created: 2020-08-24 09:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f8635dcc3a55c97815c7ed020922471 SHA-1: 66e96389e57f9395fb4d95c923e4990cc8f25e8f SHA-256: 9f210fc9e51582353ff3e70e1189b10776a8d16ec3616cf4c18ba2d709868927
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of an SEO link farm, with numerous embedded links, many pointing to external PDFs hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is likely used to obscure the ultimate destination of the malicious traffic. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent.

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=kubernetes+vs+ansible+vs+terraform
    • http://pulonutuk.serialsafe.info/uploads/1/3/0/7/130738848/zotuwalapegejijife.pdf
    • https://cdn.shopify.com/s/files/1/0434/5570/9341/files/pitotewupelovogeje.pdf
    • https://cdn.shopify.com/s/files/1/0428/8672/5795/files/zewerufati.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/blown_away_1993_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7580/files/bogituzojepuru.pdf
    • https://cdn.shopify.com/s/files/1/0429/4580/6503/files/35873128117.pdf
    • https://cdn.shopify.com/s/files/1/0457/9183/8364/files/foxakufud.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/binawanoxolaluvili.pdf
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/neleximorowunekudaxu.pdf
    • https://cdn.shopify.com/s/files/1/0438/7504/1435/files/20190729792.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45598155969.pdf
    • https://cdn.shopify.com/s/files/1/0434/1553/5767/files/norib.pdf
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/amphitryon_moliere.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/
    • https://cdn.shopify.com/s/files/1

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009341.bin
28040acd13f8a3cbee2ac748a7cbafdd6685b044461fef86fdba758cbe17c264		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9341 5084 bytes
font_01_sfnt_off0000a480.bin
abd7accb60549edd98c54476a6d387a8861480de33c43c8d9e72d2ef2ac96964		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA480 10088 bytes

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