Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cc3e889a866cfa0…

MALICIOUS

PDF

45.8 KB Created: 2020-08-25 13:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28ab6936b5ed75039e3de82fbd8a8012 SHA-1: e4acf2d0a5e373eb3fa7cf66543b33e17ede3b6b SHA-256: 7cc3e889a866cfa02f8f10c41defd580c8c84ddc2c559150e1e77f147318e24f
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/pify?keyword=last+password+change+report'. The document body, though heavily obfuscated, contains this URL and appears to be a lure for a password change report. The presence of a password-protected archive lure suggests a multi-stage attack where the actual payload is hidden until after initial security checks. The file also contains a link farm, likely for SEO poisoning to increase visibility.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=last+password+change+report
    • http://maxama.traveltsum.com/uploads/1/3/0/8/130874493/ruruwepujata_sujilewepifag.pdf
    • http://lozuz.basile-vareltzis.com/uploads/1/3/1/8/131857334/9508418.pdf
    • http://files.humanist-sociology.org/uploads/1/3/0/7/130775103/vewerewokogaxivi.pdf
    • http://files.creativitytankllc.com/uploads/1/3/2/8/132814241/8566666.pdf
    • https://cdn.shopify.com/s/files/1/0433/9492/4700/files/nutraceuticals_market_research_report.pdf
    • https://cdn.shopify.com/s/files/1/0436/3105/0905/files/windows_7_allinone.pdf
    • https://cdn.shopify.com/s/files/1/0431/9051/7911/files/avast_free_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0436/1653/4685/files/tudijetegelegi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3381/files/56713626873.pdf
    • https://cdn.shopify.com/s/files/1/0433/1647/8110/files/quadratic_equation_solver_fraction_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/ableton_9._7._1.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/fixed_budget_definition.pdf
    • https://cdn.shopify.com/s/files/1/0433/8978/0124/files/femoboravefajerufizukuru.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2672/files/88543431114.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/dusamakoj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f76.bin
b6a29e6d348e29a1032c3158b88f21db96b52af0df29b2ad4aec0381fa27c3d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F76 5336 bytes
font_01_sfnt_off000071aa.bin
37070dbd699e773044dec0a2d7f54d0de5a4572a6a8e149c8c826fad2fc8489a
pdf-font-stream PDF embedded font (sfnt) at offset 0x71AA 10420 bytes
font_02_sfnt_off0000958e.bin
fb27248ec02d804caa0ce6a8dd06a8f0f211157336bc50f6c382585ff5fe3da3
pdf-font-stream PDF embedded font (sfnt) at offset 0x958E 16084 bytes