Malicious PDF — malware analysis report

Static analysis result for SHA-256 79fe7dbad3669693…

MALICIOUS

PDF

37.7 KB Authoring application: OpenOffice Draw
MD5: 6590bedf7df07c3a2fa64768781f6945 SHA-1: b186f40f22693aeec8cb8d1e45acd099e3b943ef SHA-256: 79fe7dbad36696932c261927880e220b4dafd2dd251934e74bccdd01ac99f1e3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection further supports its malicious nature. No scripts were extracted, and the document body is heavily obfuscated, but the primary attack pattern involves directing users to external resources.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://sapek.wiki-energie.com/uploads/2020/01/29/poxajonexadixu.pdf
    • http://negocioscontra.com/uploads/1/3/0/4/130483402/4313184.pdf
    • http://nottinghamkickboxing.com/uploads/1/3/0/5/130544625/gopakagigemaz.pdf
    • http://nirvanastorage.net/uploads/1/3/0/4/130436136/xukalujaj.pdf
    • http://lets-split.com/uploads/1/3/0/6/130604612/zizoz.pdf
    • http://northoakdesign.com/uploads/1/3/0/6/130639626/filisutibegasolara.pdf
    • http://sax.moiklining.ru/uploads/2020/01/28/5194693.pdf
    • http://resonancetapexperience.com/uploads/1/3/0/6/130621284/578790.pdf
    • http://lorenamartinezhomes.com/uploads/1/3/0/6/130620573/692769.pdf
    • http://naturalhand.net/uploads/1/3/0/4/130476135/pakaxi.pdf
    • http://peake.design/uploads/1/3/0/4/130435821/75bcc640b3af.pdf
    • http://smoothtransitionservices.com/uploads/1/3/0/5/130588403/varimesuvegelo.pdf
    • http://antiviruseprotectserviceonline.site/uploads/1/3/0/7/130738890/130738890.html#cancer+awareness+clip+art+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001296.bin
4d7f9990c6eecbf7fbeaf09aec91400da486e4d0524db949cad8290586191ebf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1296 7844 bytes

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