Malicious PDF — malware analysis report

Static analysis result for SHA-256 d114de7d28a35bb2…

MALICIOUS

PDF

34.7 KB Authoring application: pstoedit
MD5: ecc5c6a38222b8d63b79be698ff22360 SHA-1: 0ed287b69d6d7fdf31392e2ae8d1b90a6c8b5f28 SHA-256: d114de7d28a35bb22ee85188fde0f955712c890951d311180f6b625498c4fb86
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule and ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0. The document body 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 ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lmathletics.org/uploads/1/3/0/4/130484005/gilezidesiw-sotubep-lakawisifarofep.pdf
    • http://lemurjewels.net/uploads/1/3/0/2/130270957/894b9299107.pdf
    • http://djtlmusic.com/uploads/1/3/0/5/130539419/taramum.pdf
    • http://mail.misterspas.com/uploads/1/3/0/7/130740504/4228598.pdf
    • http://blockchainambassador.ca/uploads/1/3/0/5/130550760/627297.pdf
    • http://janeaceslifka.com/uploads/1/3/0/4/130476574/sasujelosunop-zukopav.pdf
    • http://thinkglobaly.com/uploads/1/3/0/5/130544078/tofeno-doparet-radufowogulur.pdf
    • http://www.cookiesccc.com/uploads/1/3/0/5/130550667/b4b839ff.pdf
    • http://hophop-acs.com/uploads/1/3/0/5/130588427/mizebememur.pdf
    • http://baronyofthelonelytower.org/uploads/1/3/0/7/130775572/1995399.pdf
    • http://1983mke.com/uploads/1/3/0/3/130312961/lopexafepalowo.pdf
    • http://geekthreadz.com/uploads/1/3/0/6/130605393/7598232.pdf
    • http://74-123-73-250.mgwnet.com/uploads/1/3/0/9/130969835/130969835.html#how+to+convert+pdf+to+dwg+autocad+2018

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001b6c.bin
afd8868629b61d85ec32a8a0de1ca84da82d48156cdd7447d7c4f51403cf5149		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B6C 5244 bytes
font_01_sfnt_off00002ec6.bin
4e508977be1da853e09594848c4c93fc2e6000712181b2ad1eec58a78a3d3da6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC6 8328 bytes

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