Malicious PDF — malware analysis report

Static analysis result for SHA-256 f94a3a039e64c0c7…

MALICIOUS

PDF

53.0 KB Created: 2020-09-14 12:12:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7de04dbd1eb591684a6187785ffb3675 SHA-1: df6134b98ff979db0164e7adf9046116ac54651e SHA-256: f94a3a039e64c0c72e2b3eea8392235a4352e450d0f28fabe490110319d75d09
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to appear as search results for educational materials, specifically "College physics 10th edition pdf young". The primary embedded URL, https://ttraff.link/wix?keyword=college+physics+10th+edition+pdf+young, is flagged as a malicious redirector. This indicates a social engineering tactic to lure users into clicking malicious links, likely leading to further malware delivery or phishing attempts.

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.link/wix?keyword=college+physics+10th+edition+pdf+young
    • http://mefagiduf.dwellwithchrist.com/uploads/1/3/1/4/131407736/1c79edd0.pdf
    • http://kiwet.demirandaguitar.com/uploads/1/3/0/8/130874329/sonezifokupuxupuj.pdf
    • http://loraja.allterrainmotorsport.com/uploads/1/3/2/6/132695925/2868925.pdf
    • https://static.usrfiles.com/ugd/285be4_8d5d942b947b4642af4637976f7a63f2.pdf
    • https://static.usrfiles.com/ugd/565485_4733ce64186a4bc4b7fdfc0b5debe0c9.pdf
    • https://static.usrfiles.com/ugd/429b25_8c28e07f4cc04016a9cf31d8817edcb6.pdf
    • https://static.usrfiles.com/ugd/bd5c68_99044f8d2f8c4384b67d49076dc848ab.pdf
    • https://static.usrfiles.com/ugd/704566_2a8988e729844100bbb11418056c786a.pdf
    • https://static.usrfiles.com/ugd/0c4177_2463d6fe14224b3589b0fa111bcbe97c.pdf
    • https://cdn.shopify.com/s/files/1/0433/8227/6257/files/rofobukujikopimi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3314/0127/files/nidemo.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_off00008f73.bin
cc1bbe03b16fbcdb67576b3af350afad610ea359431dc76e0a3441c6ffac1e05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F73 5312 bytes
font_01_sfnt_off0000a1a0.bin
bca8489f0ae20605a2a06a5be89e6ff2609ba7bb995f412467f3d0f35dfe3f3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A0 11048 bytes

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