Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc0754f97a843d3d…

MALICIOUS

PDF

36.7 KB Created: 2020-08-09 10:40:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c20270145569e46f4f11c9c4fc1c469 SHA-1: c40922a1c24e459bca7b47e038c86e96df9ab19d SHA-256: fc0754f97a843d3dc02134fb93577527db9852275be8221a4d087c4206ed3896
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. This suggests a link farm attack designed to lure users to malicious content, likely for credential harvesting or malware distribution. The document body itself is heavily obfuscated and contains the malicious redirector URL, reinforcing this conclusion.

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.ru/pify?keyword=ccna+200+125+book+todd+lammle+pdf
    • http://files.school.stmatthewspokane.org/uploads/1/3/2/3/132302802/bepuwex_subota.pdf
    • http://files.loisfaber.com/uploads/1/3/0/7/130776141/cb7151748b44b4f.pdf
    • http://files.nod-production.de/uploads/1/3/0/7/130776118/3864674.pdf
    • http://files.georgemoye.com/uploads/1/3/1/4/131453406/vetanaxavotap.pdf
    • http://files.nexustherapies.ch/uploads/1/3/0/7/130740323/a5ede4026.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8562/6520/files/19747775504.pdf
    • https://cdn.shopify.com/s/files/1/0435/3448/3605/files/which_ps2_bios_to_use.pdf
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/differential_equations_blanchard.pdf
    • https://cdn.shopify.com/s/files/1/0433/2398/1979/files/4573969098.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/20315433714.pdf
    • https://cdn.shopify.com/s/files/1/0428/9114/9475/files/seda_alessandro_baricco_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0430/5613/6341/files/mupugovasigodobo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/bomitivibumenedav.pdf
    • https://cdn.shopify.com/s/files/1/0438/3670/2870/files/binary_2s_complement_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2102/files/vmware_14_pro_key.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_off00004eb7.bin
091c2fed42872d86c83109a1cf3dbe198730d6eecfb77a49305a0daea6d5edd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EB7 5588 bytes
font_01_sfnt_off000061b5.bin
8c0f76929c693ff17282da9c59cd0d13906a3ba766f6bf27de294c4764877264		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61B5 10144 bytes

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