Malicious PDF — malware analysis report

Static analysis result for SHA-256 556ee5c94105eec1…

MALICIOUS

PDF

34.9 KB Created: 2020-04-05 16:29:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2c5e2d7391e729524447469c42990215 SHA-1: 15a7692914a1948ac3f37a2f6d22620f77a74191 SHA-256: 556ee5c94105eec1dd356925228483314d6db17257b703ccd77b378759f278ab
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to other PDF files hosted on similar domains, suggesting a link farm or SEO poisoning tactic. The primary external URI points to a page that claims to be a driver's manual in Arabic, likely a lure to direct users to a malicious site. The ML classifier strongly flagged this PDF as malicious.

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://mrmacbiblebook2.com/uploads/1/3/1/4/131438570/131438570.html#sc+driver%27s+manual+in+arabic
    • http://vinewoodapartments.org/uploads/1/3/0/6/130620659/mavapelowolitu_xumeke.pdf
    • http://drkatieskitchen.com/uploads/1/3/0/6/130604110/jatapefadezokuziz.pdf
    • http://twosistersdips.com/uploads/1/3/0/3/130313196/zojanoruduwisomadoso.pdf
    • http://nokant.com/uploads/1/3/0/2/130271126/d1fd0294689ac.pdf
    • http://stlsportslab.com/uploads/1/3/0/5/130540178/6390419.pdf
    • http://taiwanmothers.com/uploads/1/3/0/5/130589124/zulezujufatuj.pdf
    • http://stoneddreams.net/uploads/1/3/0/7/130739351/4744439.pdf
    • http://anusarode.com/uploads/1/3/0/6/130639700/6fb2531b1f4.pdf
    • http://suebahr.com/uploads/1/3/1/4/131438241/jikupavoregevama.pdf
    • http://rwsecuritynews.com/uploads/1/3/0/8/130874123/runipo-meluzonafud.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_off00005d73.bin
5e48bbc7cf5e5199daff8733bafb35865fe8b2890846e2a7fd96a2021c0d204a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D73 8756 bytes

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