Malicious PDF — malware analysis report

Static analysis result for SHA-256 78f9d7e7346537e2…

MALICIOUS

PDF

39.5 KB Created: 2020-03-21 15:52:03 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: aec86017513a1ebc1e778f5dca548460 SHA-1: 5fb97e5b07fda3471e832a9c20bba96bab49806f SHA-256: 78f9d7e7346537e240a5a1b3c11d08e9efcea710d2043712f3ee197eb1cace4b
92 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, indicating a link farm or redirection scheme. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, suggesting the PDF's primary purpose is to drive traffic to numerous external sites. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine a more specific lure beyond the presence of the URLs.

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://wilddivinityyoga.org/uploads/1/3/0/2/130291971/130291971.html#lung+cancer+icd+10+cm
    • http://cpanel.alltuneandlubekc.com/uploads/1/3/0/4/130436173/wopexemexaz-kapinolu.pdf
    • http://robinjoyphotography.net/uploads/1/3/0/7/130775053/9846986.pdf
    • http://adentapoland.com/uploads/1/3/0/3/130379411/f41f90ae166851.pdf
    • http://chxrryblogs.com/uploads/1/3/0/5/130551386/jedufonut_wadudokexuliruv_xiduperonode.pdf
    • http://heinslpinc.com/uploads/1/3/0/6/130639815/gixajut.pdf
    • http://pharrfamilychiropractic.com/uploads/1/3/0/4/130483690/9533941.pdf
    • http://jij.net/uploads/1/3/0/4/130483286/netopegopaxotedopax.pdf
    • http://pocketbricks.com/uploads/1/3/0/4/130476091/6922262.pdf
    • http://getyourlocation.com/uploads/1/3/0/8/130873996/xaboloke.pdf
    • http://inceptionsdesign.net/uploads/1/3/0/6/130640063/xudukamapawelo.pdf
    • http://myegiftvoucher.com/uploads/1/3/0/7/130739781/2424fb.pdf
    • http://infosoldier.com/uploads/1/3/0/7/130740357/d08246e9.pdf
    • http://www.short.shiraconsulting.ch/uploads/1/3/0/2/130289502/c0037ae6faa89.pdf
    • http://www.californiaave.info/uploads/1/3/0/8/130814605/bf9c8e29.pdf
    • http://localhippy.com/uploads/1/3/0/7/130739322/romisaxonusizujali.pdf
    • http://timtosuccess.com/uploads/1/3/0/7/130776434/8b4553a7a104e1.pdf
    • http://www.alisonhillphotography.com/uploads/1/3/0/6/130604467/2918160.pdf
    • http://joewuphoto.com/uploads/1/3/0/4/130488252/1108377.pdf
    • http://grizfitlife.com/uploads/1/3/0/5/130539022/fazovuz.pdf
    • http://www.sherwoodinmo.com/uploads/1/3/0/4/130489052/gojuxajoxeka.pdf
    • http://www.agmetalworx.com/uploads/1/3/0/5/130550968/xirapawuti-bepejiwozixek-jimasolul.pdf
    • http://susrut.com/uploads/1/3/0/5/130550783/xaxadotigomibe_viloze.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_off000074f6.bin
f09ff575e91cb8fad4df86a44b3c57e5342c8aec88562b6f8e0f6c4aac9b62b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F6 7080 bytes

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