Malicious PDF — malware analysis report

Static analysis result for SHA-256 46a4d7b13ed7bfa8…

MALICIOUS

PDF

45.2 KB Created: 2020-04-14 11:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9a61ecbfbadd80196b541ffbfba73fb8 SHA-1: ba31826c3a88c3356a55f082a0c45c707d5278fd SHA-256: 46a4d7b13ed7bfa8f96003df9f11be68235fa73ceb44d5e1c1bc50150c81cf41
92 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier as malicious. It contains a large number of external links, many of which point to domains that appear to be part of a link farm. The primary URL found in the document body is also part of this suspicious link farm. This suggests the document's purpose is to drive traffic to potentially malicious or SEO-abused websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pocolocoonline.com/uploads/1/3/1/0/131071180/131071180.html#hoichoi+bengali+movie+songs++2018
    • http://jshandymanservicesllc.org/uploads/1/3/0/4/130477135/1db9468a3f7.pdf
    • http://wewininc.org/uploads/1/3/1/3/131398125/1994105.pdf
    • http://chevreblanche.com/uploads/1/3/1/3/131380618/jofarofebenisamiz.pdf
    • http://entrepreneur-mentor.com/uploads/1/3/0/7/130739983/suforelajux.pdf
    • http://chiefcreativealtruist.com/uploads/1/3/0/6/130639143/palijeduk.pdf
    • http://prodayspasalons.com/uploads/1/3/0/8/130874130/rukufu.pdf
    • http://totalmassagesolutions.com/uploads/1/3/0/2/130289502/warutoxaf.pdf
    • http://theactionphotobooth.com/uploads/1/3/0/5/130588989/masevum.pdf
    • http://scootit.nl/uploads/1/3/0/4/130488975/lajosunuvem-tewifod-jizodogalava.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_off000088ef.bin
33cd2db2191625f8ae1c9b1a8f200babc8457f7652040dec7231bb56dc893596
pdf-font-stream PDF embedded font (sfnt) at offset 0x88EF 8228 bytes