Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad455cfd72718926…

MALICIOUS

PDF

36.5 KB Authoring application: LibreOffice Draw
MD5: f2336438eb3437b74d9bf4b5df77ce6d SHA-1: 826f10bd014cd8f727debc635b58ef587f86dde0 SHA-256: ad455cfd72718926882d5c5b517c6a5577a51ff2d6453d688d692f32ca0cd158
150 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, for malicious content. The PDF_SEO_LINK_FARM heuristic indicates a large number of external PDF links, with the primary domain being mississauganations.com. The document body contains a mix of legitimate-looking text and embedded URLs, suggesting a lure to external content. The presence of these links and the heuristic firings strongly suggest a phishing or SEO spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://mississauganations.com/uploads/1/3/0/6/130604838/618b6.pdf
    • http://the-b-hive.com/uploads/1/3/0/5/130589223/e77c81765.pdf
    • http://lowaletijo.rnb.name/uploads/2020/01/27/7545569.pdf
    • http://thefountainofjoy.org/uploads/1/3/0/6/130605381/gapoxof_pelosolegepon.pdf
    • http://aerosportoutfitter.com/uploads/1/3/0/6/130605349/loxigidiwefazo.pdf
    • https://likobolodume.weebly.com/uploads/1/3/0/5/130590054/8744843.pdf
    • http://shaun-wilson.com/uploads/1/3/0/6/130620348/8e4ab0a00bf3.pdf
    • http://daliwab.globaltransavto.ru/uploads/2020/01/27/9504750.pdf
    • http://wag.painttech.store/uploads/2020/01/28/1292833.pdf
    • http://ucfrugby.org/uploads/1/3/0/5/130547142/fa8c863da45.pdf
    • http://thekimrichardson.com/uploads/1/3/0/2/130272859/kulalirep_zasukagote_joroxewaduku.pdf
    • http://tusawi.med555.ru/uploads/2020/01/28/9821413.pdf
    • http://dominicbercier.com/uploads/1/3/0/5/130545884/130545884.html#bullous+lichen+planus+case+report

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001312.bin
6b7c6b3b38ba80f40b4edc1e612091a0839cc49202f6e422862108a75ec3b7d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1312 8656 bytes

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