Malicious PDF — malware analysis report

Static analysis result for SHA-256 08078280349c0a88…

MALICIOUS

PDF

31.4 KB Created: 2020-04-21 00:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a3b681d1a5032ed88094cf2f7952b878 SHA-1: ab62dfe4d4becf85a8e7e8e27f4c540fab2708ca SHA-256: 08078280349c0a883e269f8ed85853b6c4f61ae43d97d9ab5cb9aa641bf86f62
94 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm or SEO scam, directing users to numerous external websites. The heuristic 'PDF_SEO_LINK_FARM' specifically indicates a large number of external links within a small PDF, suggesting an attempt to manipulate search engine rankings or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 3

  • 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
  • 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://simpsonhomeinspections.com/uploads/1/3/0/6/130604615/130604615.html#polyethylene+plastic+sheets+supplier
    • http://caloundralittleathletics.com/uploads/1/3/1/4/131482867/2d9fa25.pdf
    • http://resistingtrump.org/uploads/1/3/0/5/130588276/3915158.pdf
    • http://interfaithdialogue.us/uploads/1/3/1/3/131384403/3f7683.pdf
    • http://magicbottles.net/uploads/1/3/0/5/130541443/vunixeja.pdf
    • http://craftfood.london/uploads/1/3/0/7/130740151/b2ed6110b95c5.pdf
    • http://525maple.com/uploads/1/3/1/4/131453853/3479415.pdf
    • http://randolphregionalanimalshelter.com/uploads/1/3/0/3/130323116/zixebo.pdf
    • http://alaskahealinghands.com/uploads/1/3/1/4/131437881/88679.pdf
    • http://subwaynewry.com/uploads/1/3/0/7/130740378/kadolawiforomo.pdf
    • http://kersteninc.com/uploads/1/3/1/4/131454537/gilox-fakopenobejoj-tebike.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f90.bin
685148487949c7816f220221e7e8dda7b420c7dfc8ac02f37b7b3ccd206d17e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F90 8020 bytes

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