Malicious PDF — malware analysis report

Static analysis result for SHA-256 298d8f6ccd6ef65d…

MALICIOUS

PDF

45.4 KB Created: 2020-08-21 14:12:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a18361e682650a74765c2a5d410813f7 SHA-1: f82888b7c70c903ca3a84c312da1cf266dfff682 SHA-256: 298d8f6ccd6ef65ddd1d4148944c34c0be60d5beccb17608c7035d1eea5a59ae
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=nc+odometer+statement+form'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, including one hosted on Shopify. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=nc+odometer+statement+form
    • http://files.yogaflowlivermore.com/uploads/1/3/2/6/132681219/66073d414575ef1.pdf
    • https://cdn.shopify.com/s/files/1/0430/0914/7043/files/strategy_definition.pdf
    • https://cdn.shopify.com/s/files/1/0449/2309/3147/files/horns_down_emoji.pdf
    • https://cdn.shopify.com/s/files/1/0440/5808/3493/files/waremisawasidadufo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/formulaire_attestation_employeur_pole_emploi.pdf
    • https://cdn.shopify.com/s/files/1/0451/9323/2535/files/beauty_therapist_consultation_form_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/melanie_collins_nfl_reporter.pdf
    • https://cdn.shopify.com/s/files/1/0434/6655/5556/files/jibovoxajobaroburez.pdf
    • https://cdn.shopify.com/s/files/1/0430/9650/6521/files/arrow_of_god_by_chinua_achebe_summary.pdf
    • https://cdn.shopify.com/s/files/1/0429/4439/7468/files/2765387600.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/pikozitamazesek.pdf
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/14979319011.pdf
    • https://cdn.shopify.com/s/files/1/0430/3113/4365/files/jufuzevuvufuzufaga.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/94744467792.pdf
    • https://cdn.shopify.com/s/files/1/0427/9749/8535/files/powerpoint_template_certificate_of_completion.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1175/files/kenya_form_2_biology_notes.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_off000072a0.bin
a0ba8eb36ec3ea8eb06ba6bbb20868beca8cc56a454b7f0aa9d57ad5a65b1c88
pdf-font-stream PDF embedded font (sfnt) at offset 0x72A0 5104 bytes
font_01_sfnt_off000083dc.bin
55b56225c482abeafe1784f7f4ea692e3268866e176e25dc41bfbcb9c06eea6c
pdf-font-stream PDF embedded font (sfnt) at offset 0x83DC 10908 bytes