Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d0a643c359f055…

MALICIOUS

PDF

40.4 KB Created: 2020-08-01 08:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71e69c64b63e4d2d29a7f3e203e11480 SHA-1: ac14c6e155e8bbead655f1e3d274065fed6d6c67 SHA-256: f0d0a643c359f055c55c46063c491bb698b99b26bc3e4e0a192aaa29270c51ce
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 redirects to a known malicious domain (ttraff.cc). The document body, though heavily obfuscated, contains the text 'What are some examples of nonpolar molecules' and the malicious URL, suggesting a lure to disguise malicious redirection as an educational resource. The primary attack pattern involves tricking the user into clicking a link that leads to malicious infrastructure.

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=what+are+some+examples+of+nonpolar+molecules
    • http://files.trianglechamberacademy.com/uploads/1/3/2/6/132695915/verozubev_lawasuwolomuti.pdf
    • http://files.mwilkinson91.com/uploads/1/3/2/6/132695569/wosotiv.pdf
    • http://files.nic-hunter.com/uploads/1/3/1/1/131164250/4021025.pdf
    • http://files.schoollibraryoutloud.org/uploads/1/3/1/3/131380342/xesopagekamozek.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/4998299611.pdf
    • https://cdn.shopify.com/s/files/1/0434/2094/2486/files/gapasodebow.pdf
    • https://cdn.shopify.com/s/files/1/0428/4825/6156/files/42551818675.pdf
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/suxuxiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/0995/0367/files/16655218416.pdf
    • https://cdn.shopify.com/s/files/1/0435/6905/3854/files/42986881992.pdf
    • https://cdn.shopify.com/s/files/1/0433/3066/6651/files/roxabuwadasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8121/1810/files/kepemiposijixosexi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/34367457574.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/girepuliwupar.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_off00005f1d.bin
3f04b662ac1be8421153d25d7796b8ed272ab181238726f2258fd309c55d2bfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1D 5336 bytes
font_01_sfnt_off0000712c.bin
e9ae7d3c008b76bfaae611259352fa3ba56d664c48ab2d183a59bf732b51abf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x712C 10384 bytes

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