Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0cc46d23a757060…

MALICIOUS

PDF

36.8 KB Created: 2020-08-19 00:26:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0a5965a258d570bafb56ac314d18f1d SHA-1: 744703e98c4c345d07e23d4eebc43e5b19290d47 SHA-256: c0cc46d23a75706099fa3149a2949a1bc6630827e54611a7bdb52b9dea4f1338
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at "https://ttraff.ru/pify?keyword=antenna+and+wave+propagation+gsn+raju+pdf". The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=antenna+and+wave+propagation+gsn+raju+pdf
    • http://files.wallacewoodworkslogfurniture.com/uploads/1/3/2/6/132682899/jonuzumovotaxi.pdf
    • http://files.mhdtechnologycorp.com/uploads/1/3/2/6/132696111/6503553.pdf
    • http://files.ljsmithart.com/uploads/1/3/2/6/132695881/7363037.pdf
    • http://files.salt-kitchen-co.com/uploads/1/3/1/6/131637402/9947709.pdf
    • http://files.onceuponacanvasbenicia.com/uploads/1/3/0/8/130874627/7496283.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/89150265205.pdf
    • https://cdn.shopify.com/s/files/1/0435/3314/0127/files/35621851892.pdf
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/99448796474.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/3277197849.pdf
    • https://cdn.shopify.com/s/files/1/0433/4501/9035/files/6014835301.pdf
    • https://cdn.shopify.com/s/files/1/0448/0807/7473/files/3d_animation_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0429/2381/9164/files/91204799184.pdf
    • https://cdn.shopify.com/s/files/1/0434/6147/6504/files/88195920127.pdf
    • https://cdn.shopify.com/s/files/1/0434/9627/6128/files/bed_rail_assessment.pdf
    • https://cdn.shopify.com/s/files/1/0438/0858/7933/files/89801468800.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6505/files/kivefafifinuxufesufe.pdf
    • https://cdn.shopify.com/s/files/1/0444/8750/8135/files/routing_protocols_in_manet.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/waxewimufimalo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/65991920312.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_off000050fb.bin
e0c72bb7b350d804134ecc0d9896bb48401c50b375e49155dcc69b2b5320cdd6
pdf-font-stream PDF embedded font (sfnt) at offset 0x50FB 5396 bytes
font_01_sfnt_off0000637c.bin
fcd74146927c60391b3bc52901c9e456e197b4987ba384108e3dee537500656a
pdf-font-stream PDF embedded font (sfnt) at offset 0x637C 9972 bytes