Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fe162bddb168444…

MALICIOUS

PDF

34.5 KB Created: 2020-08-31 07:18:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 876b8031ce6d2dab451462aebe76f59c SHA-1: 2c6ed3dfc184e4e6a153480058228d72de96a272 SHA-256: 1fe162bddb1684440fe49750282d1c50011c33e5ada950a31ce03c537ec9e08a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: User Execution: Malicious File

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com', suggesting a phishing or malware distribution attempt. The presence of many links hosted on 'cdn.shopify.com' further supports the link farm hypothesis. No scripts were extracted, and the document body is heavily obfuscated, but the link structure strongly indicates a malicious intent to redirect users.

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/wix?keyword=linear+vs+tactile
    • https://cdn.shopify.com/s/files/1/0450/4266/3582/files/49539000425.pdf
    • https://cdn.shopify.com/s/files/1/0432/2961/0141/files/desenhos_alusivos_a_dezembro.pdf
    • https://cdn.shopify.com/s/files/1/0429/5242/5631/files/91650499891.pdf
    • https://cdn.shopify.com/s/files/1/0433/3718/7493/files/hibbeler_mechanics_of_materials_10th.pdf
    • https://cdn.shopify.com/s/files/1/0434/8660/9573/files/4350652760.pdf
    • https://static.usrfiles.com/ugd/b8c837_6371cab9a18e4de4afbad73d6b44d57c.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d6c28f4f1634f46804adda5f68eccf5.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/alice_in_wonderland_complete.pdf
    • https://cdn.shopify.com/s/files/1/0432/2652/9956/files/passion_pizza_liverpool.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/341799992.pdf
    • https://cdn.shopify.com/s/files/1/0434/5243/2537/files/49633145888.pdf
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/94251129300.pdf
    • https://static.usrfiles.com/ugd/d5415a_2682446c2f6446e887168fce4aa4a6e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_b134deba61ea41e5b8d411481a5f561c.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f7deda28ff6422481ffdd6e65b38894.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_off00004b04.bin
8693dd6af5c486f31fae61e6d81c03ed5a09282365752600835b1a5d27d9c604		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B04 4796 bytes
font_01_sfnt_off00005b5c.bin
573c567400e428a29adc28695e0d8a322a582aa8c14d2271c809c469f960f579		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5C 10260 bytes

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