Malicious PDF — malware analysis report

Static analysis result for SHA-256 226184e7e5275364…

MALICIOUS

PDF

42.8 KB Created: 2020-04-12 04:03:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e68e35e63b8210a636f34759a60557f0 SHA-1: 8acc3cc249facaebcaa4f17bd61167b24b701106 SHA-256: 226184e7e527536458b7158e2ffd1ecdc739f6ad98a174059158c3a17cbe6c93
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to domains with numeric or generic slugs, indicative of a link farm. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves redirecting users to external URLs, likely for phishing or malware distribution.

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://lp5280media.com/uploads/1/3/1/0/131071309/131071309.html#como+hacer+un+proyecto+de+vida+con+mision+y+vision
    • http://ujcdsgn.com/uploads/1/3/0/2/130270813/6689435.pdf
    • http://speedoecu.com/uploads/1/3/1/3/131384470/3815104.pdf
    • http://maquinariaolivares.com/uploads/1/3/0/5/130588649/4ac1158d721d9e.pdf
    • http://advantageinsuranceagency.net/uploads/1/3/0/7/130738735/2977637.pdf
    • http://cbdhempguy.com/uploads/1/3/1/6/131637830/vedavolidodo_zobofanogomopa_mofilolawek_mekime.pdf
    • http://turnerhallmedia.com/uploads/1/3/0/7/130776672/6050055.pdf
    • http://abettermelifestyle.com/uploads/1/3/0/5/130588754/wogezatujuben.pdf
    • http://rebathofsouthlouisiana.com/uploads/1/3/1/3/131381721/5d4284000c5a9f.pdf
    • http://megproject.org/uploads/1/3/0/5/130588342/2491b.pdf
    • http://bouldenscience.com/uploads/1/3/0/4/130490117/751572.pdf
    • http://station82.com/uploads/1/3/1/4/131408027/talamujiwaresotimi.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_off00007bd3.bin
d54ecf9d0c9cfb056b1a3cd43128984108fd3007f2782901e3e4bcc483d30453		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD3 9136 bytes

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