Malicious PDF — malware analysis report

Static analysis result for SHA-256 548ff6475e9e37dd…

MALICIOUS

PDF

53.6 KB Created: 2020-04-14 16:10:01 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a523e08628bf33da28689fcd0df5b5c0 SHA-1: a16399922a07ac9e2dbe2c1fc1a87147729f0a55 SHA-256: 548ff6475e9e37dddf3b55c61e49c1de3bcfacb38d11a1a369d96c95222aa0dc
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are hosted on unrelated domains and use numeric or generic slugs, indicative of a link farm or SEO spam operation. The document body, though partially corrupted, contains text related to 'pizza kaise banate hai video', suggesting a lure to attract unsuspecting users. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://clickinteriordesign.net/uploads/1/3/0/7/130739415/130739415.html#pizza+kaise+banate+hai+video
    • http://bluelabelhair.com/uploads/1/3/1/3/131380504/wigowajamuk-vikos.pdf
    • http://naufalsamudra.com/uploads/1/3/0/5/130590368/608684.pdf
    • http://happyhomeswhitsundays.com/uploads/1/3/1/1/131163984/jobipilukobatu.pdf
    • http://the-revolution-of-hope.com/uploads/1/3/0/4/130478163/wuwaxabedidubipil.pdf
    • http://catholicchristianlifecoach.com/uploads/1/3/0/6/130639521/ebb960bc29322.pdf
    • http://freecallwithjoliane.com/uploads/1/3/1/4/131437430/f18e5d.pdf
    • http://caninecomfortmassage.com/uploads/1/3/0/8/130813582/rozefimubasepux.pdf
    • http://dalestreetbridge.com/uploads/1/3/1/4/131453706/a9fd48b6ec.pdf
    • http://doggyplayday.net/uploads/1/3/0/2/130272266/5454167.pdf
    • http://otomatech.com/uploads/1/3/0/2/130272501/vagolusogetira-zasupire.pdf
    • http://pasifiko.com/uploads/1/3/1/3/131380619/pilagowo-karuj.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008643.bin
d69ca282b693a4264434fa42fc0262e927901dd5b7da5e80dd9512f94397f0be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8643 5208 bytes
font_01_sfnt_off00009b8a.bin
1bc134b4d2c73439c34df046dee9c02585b85184e05a55c2aeaa2433c2ba2e11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B8A 15760 bytes

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