Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcdbaad3e4520519…

MALICIOUS

PDF

42.1 KB Created: 2020-09-07 21:25:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f0448ded82a97a96e161df70d646940 SHA-1: 8a067edfd75dd5b7355d188b398847b036da0483 SHA-256: fcdbaad3e452051912c08cee9b18d5cda0744bb5796f6349d62ca9368c61175a
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to static.usrfiles.com, but one critical link redirects to a known malicious domain, ttraff.me. This suggests the document is designed to drive traffic to malicious infrastructure, likely for phishing or malware distribution, under the guise of providing website templates. No scripts were extracted, limiting the analysis of direct payload execution.

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.me/pify?keyword=hd+website+templates
    • https://static.usrfiles.com/ugd/b8c837_116f9e7c5bb14586972edbc3ed1e0a6a.pdf
    • https://static.usrfiles.com/ugd/a76634_8f5bf43939584852aa6d2a8a1d07aaa2.pdf
    • https://static.usrfiles.com/ugd/fb5067_959d12599ff04eb1bebca6f77c155cfb.pdf
    • https://static.usrfiles.com/ugd/e3834b_0f234e6349764e9e81039fc63f36fcae.pdf
    • https://static.usrfiles.com/ugd/296484_18db9678ea0a48b29d98cbd1f1951b71.pdf
    • https://static.usrfiles.com/ugd/78daac_9a899141264a48579f7d2154133d94d9.pdf
    • https://static.usrfiles.com/ugd/dd6616_ae4dac67063645409939582ddc12478b.pdf
    • https://static.usrfiles.com/ugd/d8e941_a51762d44e9842b48e018bc4240be167.pdf
    • https://static.usrfiles.com/ugd/3794ad_884a1ef433814f44b83986c37db172f8.pdf
    • https://static.usrfiles.com/ugd/57c819_2d9cb38aaab04cbf8a84d1c44c61ea3c.pdf
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/the_holder_of_a_promotional_permit_may.pdf
    • https://cdn.shopify.com/s/files/1/0433/4131/6249/files/bikefegesuwulexajebegopu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1549/files/67342595842.pdf
    • https://cdn.shopify.com/s/files/1/0439/6757/8270/files/zero_hour_contract_template_jersey_channel_islands.pdf
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/dupasadexakut.pdf
    • https://cdn.shopify.com/s/files/1/0428/4927/1975/files/41520787592.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/581605044.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_off000065dc.bin
7581a00a73e66dfb60d95ec269d0812aab714084309b59b5065ffecdf7b7a85f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65DC 5204 bytes
font_01_sfnt_off00007784.bin
b838900c761393b8911085abe6ece770e9ac0231e3b6a6770841f72b7303f4e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7784 10676 bytes

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