Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ffbc8101034735f…

MALICIOUS

PDF

34.3 KB Created: 2020-05-15 08:49:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db9a61b9cc225298302051a2753f9728 SHA-1: 1fe7919bb41f29b058d3d0aa08c70f19591ec4cc SHA-256: 8ffbc8101034735fae75395b97f106a555945e8b6f1a7fa46caf56b353b10880
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links pointing to various domains, a technique commonly used in SEO poisoning or phishing campaigns to lure users to malicious content. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to the URLs, reinforcing the link farm attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://chipsincsu.com/uploads/1/3/0/7/130775259/130775259.html#ocean+of+apk+wwe+2k19
    • http://alloexo.vip/uploads/1/3/0/7/130776061/logis_fokerara_tajanow_gepali.pdf
    • http://kateaitchison.com/uploads/1/3/1/0/131069899/fifatemejivepo.pdf
    • http://tricolorprint.com/uploads/1/3/1/4/131406558/a90eccba9a1.pdf
    • http://southsidecustoms.shop/uploads/1/3/0/5/130589122/5294780.pdf
    • http://robinbrons.info/uploads/1/3/1/4/131453823/dukaxo.pdf
    • http://breakingbreadent.com/uploads/1/3/0/8/130814360/kejajoj.pdf
    • http://monostudiomilano.net/uploads/1/3/0/6/130604808/jizexiwijiveso.pdf
    • http://otmwithq.com/uploads/1/3/1/4/131483557/6914822.pdf
    • http://djswytch.com/uploads/1/3/0/3/130323384/vomul-lopobesutilagix.pdf
    • http://friendsofkathleenharder.com/uploads/1/3/0/6/130621052/6433233.pdf
    • http://lifeauthentic.net/uploads/1/3/0/8/130874001/kakarelaremowopani.pdf
    • http://anitayorkstories.com/uploads/1/3/0/7/130740607/4beabb981e2ec4.pdf
    • http://mydebtreliefteam.com/uploads/1/3/0/2/130272877/webufis.pdf
    • http://head2toesalon.net/uploads/1/3/0/4/130477192/tufuwetozirugabemipi.pdf
    • http://rollingnectar.com/uploads/1/3/1/6/131637306/9614288.pdf
    • http://jdotech.net/uploads/1/3/0/6/130604973/xabavukunijifar.pdf
    • http://creativepropertysolutions.org/uploads/1/3/1/3/131381052/rumevo.pdf
    • http://vanessarochontierney.com/uploads/1/3/0/6/130620573/9448964.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068c3.bin
664db96c1b7946bb4b64942e72df07e654a38d98860084c70912d2f79122615f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68C3 11112 bytes

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