Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c3fb0eec4d18cb3…

MALICIOUS

PDF

66.2 KB Created: 2020-05-18 21:03:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a59bbc54097b96814817f21cf5a0d8f SHA-1: c2a65debf310441c7ee42205793db3dd96842456 SHA-256: 6c3fb0eec4d18cb33ed78124a8367e5f48320faf1f77f898704359a5bf047000
136 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is part of an advance-fee scam, presenting language related to lotteries, prizes, and courier delivery. It also contains numerous external links, with one specifically masquerading as a software download for 'Mendix studio pro'. While no scripts were explicitly extracted, the presence of multiple suspicious URLs and the scam-related content strongly suggests a malicious intent to deceive the user into clicking these links, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9680

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://omnicasa.org/uploads/1/3/0/4/130478709/130478709.html#mendix+studio+pro+download
    • http://arrowheadlandscapingandsprinkler.com/uploads/1/3/0/7/130738978/86e0d1.pdf
    • http://th3c0mpany.com/uploads/1/3/0/8/130874094/bapusurotatefoj_kuvovolebuxa_ratefefofo_wugebef.pdf
    • http://neilpalleti.com/uploads/1/3/1/3/131383648/8869533.pdf
    • http://equityhr.com/uploads/1/3/1/0/131070146/wofapetoputavex.pdf
    • http://nazcreationcaresummit.com/uploads/1/3/1/1/131164218/9624858.pdf
    • http://fortiersforte.com/uploads/1/3/0/6/130604495/63501fa2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8cf.bin
0b3bc036ffbf9e4ebdc71d48ff7d4cfd759fd930e6b2c6ca4e35474f0e05601f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CF 10828 bytes

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