Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc011df5135bc41…

MALICIOUS

PDF

31.6 KB Created: 2020-03-21 20:57:52 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fc609fad1e4fd2f66498ccccbf0e7627 SHA-1: be5aa189d54efdcaa6e3304842024ec04bb33b07 SHA-256: fcc011df5135bc4133b05fa31b4f6cfabdc6d523208e2e9a3a80ea96ff79a437
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links to various domains, many of which appear to be part of an SEO link farm. The primary URL points to a page with a title related to live streaming, suggesting a lure. The ML classifier strongly indicated maliciousness. The PDF structure and extensive external linking are indicative of a campaign to drive traffic to potentially malicious or ad-heavy 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://newstylemarket.com/uploads/1/3/0/7/130775336/130775336.html#mazhavil+manorama+serial+live+streaming
    • http://boutiquenanamoda.com/uploads/1/3/0/4/130483673/genozu.pdf
    • http://masalanproject.com/uploads/1/3/0/6/130639326/a8df212f2.pdf
    • http://97argonne.com/uploads/1/3/0/6/130621583/2694574.pdf
    • http://www.justsittingherethinking.com/uploads/1/3/0/7/130739474/taxezirivim.pdf
    • http://www.pflagnorwalk.com/uploads/1/3/0/8/130813953/tizarumowigixejoza.pdf
    • http://74-123-77-21.mgwnet.com/uploads/1/3/0/2/130291783/litefalarifinutu.pdf
    • http://m.massageredefined.com/uploads/1/3/0/7/130739427/kunibizifofewowafe.pdf
    • http://prezopro.com/uploads/1/3/0/7/130739509/wenulik.pdf
    • http://mountvistapersians.com/uploads/1/3/0/5/130539842/rafuxurapepi.pdf
    • http://bushcraftsweaters.com/uploads/1/3/0/2/130272232/junike.pdf
    • http://jllinvestorsentimentforum.com/uploads/1/3/0/5/130541688/1850218.pdf
    • http://leomusic.studio/uploads/1/3/0/8/130873782/bba814438237d.pdf
    • http://piqiplay.com/uploads/1/3/0/7/130739200/9216558.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_off0000540d.bin
58186b46ff9864c6808d2333e8bfee09f78c2ef22804c75dde711a6cc42bf107		 pdf-font-stream PDF embedded font (sfnt) at offset 0x540D 7568 bytes

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