Malicious PDF — malware analysis report

Static analysis result for SHA-256 337b4075bcb3617f…

MALICIOUS

PDF

42.6 KB Created: 2020-04-10 09:57:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5e148c3d04d58c05203f1ee304111577 SHA-1: 23bd75266d75fc20a56d35f5127922f67411684e SHA-256: 337b4075bcb3617f8c7ca8422dc4637088718ce0233a5ed17957b33bd197d251
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains text that appears to be a lure, and the embedded URLs point to various domains. The primary function appears to be directing users to a network of linked pages, likely for malicious purposes such as phishing or malware distribution.

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://cdlccakes.com/uploads/1/3/1/4/131483149/131483149.html#el+amor+de+mi+vida+eres+tu+frases
    • http://thefityou.com/uploads/1/3/1/4/131438761/fazoxe.pdf
    • http://captainscutlawncare.com/uploads/1/3/1/1/131163932/sutusopexovu.pdf
    • http://karissashae.com/uploads/1/3/0/9/130969885/9557af66508.pdf
    • http://swflhandyman.com/uploads/1/3/0/9/130969931/14251570a17f816.pdf
    • http://kaliegreenberg.com/uploads/1/3/1/4/131483378/727c422.pdf
    • http://mixandmatchcoathangers.com/uploads/1/3/0/5/130589044/lepobuvirusewubaxa.pdf
    • http://custominnovations.net/uploads/1/3/1/3/131379935/1542314422b8b4.pdf
    • http://tylercurtisdesign.com/uploads/1/3/0/6/130639069/eb68d0.pdf
    • http://mymeds.info/uploads/1/3/0/2/130270946/5ae0e38.pdf
    • http://promocoinbase.com/uploads/1/3/1/0/131071113/redasinukosete-netavut-xexaju.pdf
    • http://pintudesign.com/uploads/1/3/0/7/130739039/jomunamojodoju.pdf
    • http://naturalbalancetherapies.org/uploads/1/3/0/2/130270798/fofawutibemow-mowujo-satiduja.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_off00007b71.bin
28275b9b59cb4bc0b693c54175e5000ef5f20f646f885205a5057e3a1f114230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B71 8908 bytes

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