Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e634df0081f75db…

MALICIOUS

PDF

36.7 KB Created: 2020-08-02 21:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffc92fa2a04ab9ed7a8abab66e14588f SHA-1: c7489193b3e00cb0985759da4a76b4100039055e SHA-256: 9e634df0081f75dbd8d8c94c743b1aec8aa48c94683315a2b5583f0591424911
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding a significant number of external links. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=bl2+storm+front'. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a coordinated effort to distribute malicious content or phish users. The presence of numerous Shopify-hosted PDF links, alongside the malicious redirector, indicates a likely attempt to obscure the final malicious destination.

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=bl2+storm+front
    • http://files.2skypattaya.com/uploads/1/3/0/8/130813427/lepuz.pdf
    • http://files.cjcbigband.org/uploads/1/3/1/8/131856919/a2cecc087.pdf
    • http://files.southeasternclubcl.com/uploads/1/3/0/8/130873918/6327180.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1712/files/fenexovasexapavasele.pdf
    • https://cdn.shopify.com/s/files/1/0435/2186/7930/files/matifudaserabuvalilojel.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/pawumazokewuwir.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/55625545116.pdf
    • https://cdn.shopify.com/s/files/1/0435/4405/1864/files/loposowuzakofatala.pdf
    • https://cdn.shopify.com/s/files/1/0437/7876/9045/files/resident_evil_1_walkthroughs.pdf
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/29633928357.pdf
    • https://cdn.shopify.com/s/files/1/0431/8956/7650/files/55791026783.pdf
    • https://cdn.shopify.com/s/files/1/0430/7723/8945/files/fleetwood_rv_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/2749/6087/files/lesiniso.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tunamowari.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/ace_hood_blood_sweat_and_tears_zip.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_off000053e8.bin
63a371597050f4ae3b239b0961ae6c5cf90a3de5f2597d7196b8ab200b1a7662		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53E8 4884 bytes
font_01_sfnt_off00006474.bin
79291b3db1fa68b7cac3485c71a82171c6b2fe62223a5840c1addce9ceafeb3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6474 9916 bytes

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