Malicious PDF — malware analysis report

Static analysis result for SHA-256 772f04ca54d0b902…

MALICIOUS

PDF

36.8 KB Authoring application: Adobe PDF Library 9.0
MD5: 79c952506af9caa5d218ec0c4ba656b5 SHA-1: cbbcc945194975165f36da32603f239c925d6453 SHA-256: 772f04ca54d0b9029b4daeb997f360f870f8211c8cc9fa242fb5867203fe957f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of embedded URLs pointing to external PDF files, suggesting a link farm or a distribution mechanism for further malicious content. The presence of embedded URLs and the nature of the detection indicate a phishing or malware distribution attempt.

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://niceoliveira.com/uploads/2020/01/29/8009de8a9aae56.pdf
    • http://jubejusuro.krasnodar-reshenie.ru/uploads/2020/01/28/danogelifakit-raxilazipa-fagufedewamalix-ragife.pdf
    • https://loragokafiziki.weebly.com/uploads/1/3/0/2/130271038/6551494.pdf
    • http://annuityblast.com/uploads/1/3/0/2/130287513/konuxupuxupejowoxojo.pdf
    • http://ablelawnandtreecare.com/uploads/1/3/0/5/130590400/gugedunozunu.pdf
    • http://asharedjourney2018.com/uploads/1/3/0/6/130605516/792520.pdf
    • http://pudifeni.autogost.com/uploads/2020/01/29/1845733.pdf
    • http://roxandsol.com/uploads/1/3/0/6/130620460/zudabikajuwegujon.pdf
    • http://vopep.market-lm.com/uploads/2020/01/28/sekefoxuj.pdf
    • https://tulogonapajipo.weebly.com/uploads/1/3/0/5/130551362/tugulaluxuzogunuwi.pdf
    • http://michelledrumheller.com/uploads/1/3/0/2/130273584/2119922.pdf
    • http://evokefitness.net/uploads/1/3/0/4/130483136/130483136.html#istanbul+metro+map+airport

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012bf.bin
2e8f7d2eab4ff470bd56467f62a9a4268fdc64b6ea90e9da99b778185f473a25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF 7948 bytes

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