Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1886ec54f49cc88…

MALICIOUS

PDF

35.9 KB Authoring application: Inkscape
MD5: 33d9d22648d5107bf0823a46efd6cef0 SHA-1: 4538a30de9526e792c0370d1ad00bf93e9a4ce0f SHA-256: d1886ec54f49cc88265e55fd6396516225ea9f8c43aa2988324b6c1bac7d2333
150 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 to other PDF files, a technique commonly used for SEO poisoning or phishing campaigns. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the PDF_SEO_LINK_FARM heuristic strongly indicate malicious intent. The embedded URLs are likely part of a campaign to redirect users to malicious content.

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.
  • 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://leruzov.luciemauger.com/uploads/2020/01/28/lebizezeka_pawejasefasiki.pdf
    • http://rizis.feerverk-spb.ru/uploads/2020/01/28/kabobera.pdf
    • https://kuzibilopibav.weebly.com/uploads/1/3/0/2/130272505/64b2bd7d0f.pdf
    • http://equmedsdnbhd.com/uploads/2020/01/28/rowovewarozig.pdf
    • http://voelter-s.de/uploads/1/3/0/6/130605168/3477402.pdf
    • http://africancatclub.com/uploads/1/3/0/2/130289365/mixobomofagawefipux.pdf
    • http://ccrpal.org/uploads/1/3/0/4/130483422/512b1fcd2.pdf
    • https://baxodexuw.weebly.com/uploads/1/3/0/3/130313098/ed05a6e4e4a7.pdf
    • http://stephanierocheleauphotography.com/uploads/1/3/0/6/130621089/9111428.pdf
    • http://sewaneepilates.com/uploads/1/3/0/5/130541133/224ed7765.pdf
    • http://ancientstudio.online/uploads/2020/01/27/27499b.pdf
    • http://zexuvodip.davidmazurphoto.com/uploads/2020/01/29/cd3954a808a2.pdf
    • http://newyoujewelryshop.com/uploads/1/3/0/3/130379285/3427e55a55.pdf
    • http://annarbormothertree.com/uploads/1/3/0/6/130604196/892701.pdf
    • https://kaxemarumoner.weebly.com/uploads/1/3/0/6/130604548/kefefofowurigev_pivagutowuja.pdf
    • https://foxapubab.weebly.com/uploads/1/3/0/2/130272363/zukogetopebufol.pdf
    • http://zotakorosi.oftsinwiltit.pro/uploads/2020/01/27/1243656.pdf
    • http://miracleinabucket.com/uploads/1/3/0/6/130604229/130604229.html#madewell+size+guide+petite

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014d2.bin
26f8974a54fec4fb6dd42614011da9c2838425619500ea14f658086cc3ab39e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14D2 8608 bytes

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