Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d612822a2ff273…

MALICIOUS

PDF

33.8 KB Created: 2020-04-05 11:17:53 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 66fd88c338a9547cce90b2e939ad0e55 SHA-1: 9100b0e7fff4bd8d533a3a3a42baed4eb4138654 SHA-256: 14d612822a2ff27360a469b7c55d4956171384c0e4f8a016a60ae8a77f7a2013
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many of which point to other PDF files hosted on similar domains. This pattern is indicative of a link farm or SEO manipulation tactic. The heuristic 'SE_PAYMENT_REDIRECT_LURE' suggests a potential pretext for these links, aiming to trick users into believing they are accessing legitimate financial information. No scripts were extracted, limiting the analysis of direct malicious execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 http://awaleventure.com/uploads/1/3/0/4/130489039/130489039.html#new+haven+car+tax+lookup
    • http://galaxyslice.com/uploads/1/3/0/6/130604859/3490743.pdf
    • http://vxbahrain.com/uploads/1/3/0/6/130621185/dutax_venetumowaxan_faxaw.pdf
    • http://brandtgalleries.com/uploads/1/3/0/7/130740019/2785691.pdf
    • http://veroniquegirard-mua.com/uploads/1/3/0/2/130273788/8877817.pdf
    • http://webauthorityproject.com/uploads/1/3/0/5/130542852/liturele-fixilesiwuwome-lowaf-luranufegifo.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fec.bin
8ae00f0ab780dcad1a97b47c2c55d20f332a33ffe3f1ee5cf40b2f5aa41db181		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEC 6884 bytes

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