Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed94bcdabeb5a502…

MALICIOUS

PDF

35.4 KB Authoring application: Poppler-utils
MD5: ec2acd40694d3b9a4c761136670783f2 SHA-1: 075ed6c6aab5121576b2033a52e1191b62ddbd55 SHA-256: ed94bcdabeb5a502860f296ea9623275e450cdc3b6ba0cff418337bf6f87fbb9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The 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 embedded content consists of a large number of external URLs, suggesting a phishing or redirection campaign. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

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://angelialayton.com/uploads/1/3/0/3/130323103/jisagifigikizuradel.pdf
    • http://prabhbroker.com/uploads/1/3/0/5/130550778/04185f0bf.pdf
    • http://unbridledaffair.com/uploads/1/3/0/6/130604923/labaguxi.pdf
    • http://acunergia.com/uploads/1/3/0/4/130435905/76a8fcc09845.pdf
    • http://myncpl.com/uploads/1/3/0/7/130776599/bobin-gifenoziv-simizutijip-desunavepanuw.pdf
    • http://kenboyerphotography.com/uploads/1/3/0/7/130739002/d36300c.pdf
    • http://mrorejel.info/uploads/1/3/0/8/130814868/mojaz.pdf
    • http://cloudlockr.com/uploads/1/3/0/7/130776511/kovup.pdf
    • http://tenzafansite.com/uploads/1/3/0/7/130740521/ninikosaweni-mukisuxutukufom-diranonime.pdf
    • http://mail2.corallinks.com/uploads/1/3/0/5/130589420/1388646.pdf
    • http://simonwestlake.com/uploads/1/3/0/6/130639559/nikivi-sabapu.pdf
    • http://www.hoofsofinspirationcounseling.org/uploads/1/3/0/6/130604225/wipugetepofabeje.pdf
    • http://hazmatpackingandsupplies.com/uploads/1/3/0/7/130740558/130740558.html#what+is+the+best+free+pdf+scanner+app+for+iphone

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031db.bin
91f1921df854bd878e1b33c7373ca2e1376346db215358f5395a7c20cc2a5286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31DB 8088 bytes

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