Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8c1cfa009fe977…

MALICIOUS

PDF

38.4 KB Created: 2020-04-14 06:19:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8d986b8048bb4158f2ab91a1dca6e927 SHA-1: 7babcd37d58355ad7dc704b6aa147f5d7b5ccf93 SHA-256: 6e8c1cfa009fe9771ea4302cb324d0ccee025410f71590aed23a1764a29b21b0
96 Risk Score

Malware Insights

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

The PDF contains a lure related to damaged luggage, directing the user to an external HTML resource. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of similar external links, suggesting a link farm designed to host malicious content or redirect users. The ML classifier strongly flags this PDF as malicious, supporting the conclusion that it is part of a phishing or malware distribution scheme.

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://redstreetblk.com/uploads/1/3/0/8/130814351/130814351.html#report+damaged+luggage+united
    • http://rhettasreliablelips.com/uploads/1/3/0/5/130551890/4071659.pdf
    • http://thecybersecuritynexus.org/uploads/1/3/0/6/130604710/1090069.pdf
    • http://southamptonwaterpolo.com/uploads/1/3/0/2/130289542/6299121.pdf
    • http://earthspiritpress.net/uploads/1/3/0/6/130604166/zomudawewuki.pdf
    • http://citykitchensocial.com/uploads/1/3/0/5/130590133/7633e8d1e3ba.pdf
    • http://dogmaanimalrescue.com/uploads/1/3/0/6/130604361/5754372.pdf
    • http://2hilltop.com/uploads/1/3/0/2/130291434/7c496f26cc9.pdf
    • http://59auc-aosta.com/uploads/1/3/0/5/130590310/jujomuxon_sojinisobaso.pdf
    • http://goldenraysofhope.com/uploads/1/3/0/7/130739652/zukavu-nofadoxotawup-raperinisugalon.pdf
    • http://tomcan.net/uploads/1/3/0/6/130605168/f4546302f1d3.pdf
    • http://irvinenewleadership.com/uploads/1/3/1/4/131452817/kumoxuzifunu.pdf
    • http://supportformissions.org/uploads/1/3/0/4/130483577/mezej.pdf
    • http://elitecareactivelife.com/uploads/1/3/1/4/131437715/1621668.pdf
    • http://gobioroots.com/uploads/1/3/1/4/131410872/2063547.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_off00006dc9.bin
59483c79a06aca03836ab5f58c0aff4824e5ee7f3c3d3ee2bc98b7dfaf1289a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC9 7676 bytes

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