Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a35eab6f601ebcf…

MALICIOUS

PDF

44.2 KB Created: 2020-08-09 01:40:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74962c3a2647a2454577276adcd9a1d9 SHA-1: 38f306dd88e90ae3a802ed17e4c68fd706b14283 SHA-256: 3a35eab6f601ebcfc20b7fbea15724695977e38969905b30521e51460681f54a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted, and the PDF structure itself is the vector for the attack.

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=tecnicas+de+aprendizaje+kinestesico+pdf
    • http://files.rrokd.com/uploads/1/3/1/6/131607703/3a7d02ac9.pdf
    • http://files.rocketcitygarageservice.com/uploads/1/3/1/1/131164129/389607.pdf
    • http://files.thorpe-players.co.uk/uploads/1/3/2/3/132303151/kapaditevuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0443/6390/files/54141997657.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/64295505748.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/50863433830.pdf
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/sonijorukonije.pdf
    • https://cdn.shopify.com/s/files/1/0450/6445/4294/files/notice_of_annual_general_meeting.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7002/files/30918974179.pdf
    • https://cdn.shopify.com/s/files/1/0429/2739/0887/files/56225921068.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/what_does.___mean_in_texting.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/cambios_psicologicos_en_la_adolescencia.pdf
    • https://cdn.shopify.com/s/files/1/0430/8870/7738/files/yourkit_java_profiler_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/72941912499.pdf
    • https://cdn.shopify.com/s/files/1/0429/6353/3977/files/kikojiletinaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/4003/8298/files/mitegulo.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_off00006b4e.bin
f378c9434f055207977365fd28210cb3e1a944a55bbd36d0d3f589b0faa15c31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4E 5256 bytes
font_01_sfnt_off00007d51.bin
9d9bcfeedda86b085fa93f726526e65e51746fdb0fe4a480439cd6d775ca064f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D51 11440 bytes

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