Malicious PDF — malware analysis report

Static analysis result for SHA-256 111b45914dec1b09…

MALICIOUS

PDF

38.0 KB Authoring application: Inkscape
MD5: f5783baefa1b97ab86c8db9922e9d304 SHA-1: aec8c2a6659f70c3299b88d26465fd6b7f66b8e9 SHA-256: 111b45914dec1b09ff45b25b0a0c6f6a863cba33f717a63350d059b0337981d6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs, indicating a link farm designed to distribute traffic to various external PDF files. The heuristic PDF_SEO_LINK_FARM and ClamAV detection strongly suggest malicious intent, likely for SEO spam or phishing. No scripts were extracted, but the sheer volume of links points to a coordinated effort to host malicious content or redirect users.

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://darkmediaguy.com/uploads/1/3/0/5/130539940/a3a9966865d2.pdf
    • http://ribbonbowsandmore.com/uploads/1/3/0/6/130639982/suxutupupamuruzeseju.pdf
    • http://profesionallashes.com/uploads/1/3/0/3/130312986/6546359.pdf
    • http://zuroceanwear.com/uploads/1/3/0/4/130476878/vimeximozapofiduduxu.pdf
    • http://ogwoodwork.com/uploads/1/3/0/6/130604509/7c9052013.pdf
    • http://antens.nl/uploads/1/3/0/6/130620172/botopumisudelik.pdf
    • http://gordonkogawa.com/uploads/1/3/0/6/130621720/6690880.pdf
    • http://rikanuj.skrb.pw/uploads/2020/01/28/kafirekebik.pdf
    • http://myriuwedding.com/uploads/1/3/0/2/130273913/jonafutipijojilivig.pdf
    • http://lumineuxangelpartners.com/uploads/1/3/0/2/130289344/wezibubo.pdf
    • http://nanaspizzapr.com/uploads/1/3/0/2/130289295/87217245.pdf
    • http://29wildcats.weebly.com/uploads/1/3/0/2/130289648/9378734.pdf
    • http://treatsbyleets.com/uploads/1/3/0/6/130621021/4541949.pdf
    • http://pastora.ru/uploads/2020/01/27/2bfb9c794bf6e9e.pdf
    • http://suxukirobo.kropanev.online/uploads/2020/01/28/9186631.pdf
    • http://roj.lulacrib.com/uploads/2020/01/29/refajebaliwore-rexetem.pdf
    • http://arthurdogsontodd.com/uploads/1/3/0/5/130539244/9550559.pdf
    • http://sauerlandhypotheek.nl/uploads/1/3/0/6/130621871/130621871.html#mochat+app++for+android

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001608.bin
d4de8de63a1cc65b407e10022fab935924d87b55c4621c2935c9b34f6b38323d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1608 8216 bytes

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