Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ea732d2b11e5d0…

MALICIOUS

PDF

38.9 KB Created: 2020-04-02 21:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a76fcb0c39a8f72560faaf93b49b8177 SHA-1: a2b67d2ef563859b3851cd56a09bead2e0ac6a47 SHA-256: 12ea732d2b11e5d0de599e2c8443ba8bdff1373ba5a843a0c83dc1ceaee6f95d
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO spam attack. The embedded document body also contains several of these URLs, reinforcing the malicious intent. While no scripts were explicitly extracted, the nature of the PDF and the numerous external links strongly indicate a malicious purpose, likely to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://adventuresbyprice.com/uploads/1/3/0/9/130969555/130969555.html#dimensions+of+conflict+handling+intentions
    • http://bellecreekresources.net/uploads/1/3/1/4/131407353/niletejepuzikewedig.pdf
    • http://altitudeexcavating.com/uploads/1/3/0/4/130478438/bf0cf.pdf
    • http://fee-frigolo.com/uploads/1/3/0/6/130604393/jugirepazepomuxoduni.pdf
    • http://christinasmithlaw.com/uploads/1/3/0/9/130969048/2140ae8d8dcf1.pdf
    • http://lovelashie.com/uploads/1/3/0/7/130775308/567974.pdf
    • http://wristgang.com/uploads/1/3/0/2/130272613/c857182b.pdf
    • http://openmindsoutreach.org/uploads/1/3/0/8/130814172/8582812.pdf
    • http://paellaverhuur.com/uploads/1/3/0/9/130969608/dalokog_pekus_lisedurafonoj.pdf
    • http://kristienienabercounseling.com/uploads/1/3/0/8/130814085/kawikowofulig-rivajob-fedumulanad-bijun.pdf
    • http://mygoddessessentials.com/uploads/1/3/0/5/130538990/5749897.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_off000072ab.bin
191db6f89c98c539f17325c525f2416d6faa4b79863c8b0e290b27a1aebfedaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72AB 7064 bytes

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