Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9e46be7704295a…

MALICIOUS

PDF

34.8 KB Authoring application: Smallpdf Desktop
MD5: 1b64b4c57c4ca1592e5a48c662f262c3 SHA-1: 045259d80ab6c1ef2575c2ab8a6c77495c079350 SHA-256: fa9e46be7704295a43820ccac3cd40d627c477968171ba6f938c0b49310478e9
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The critical PDF_SEO_LINK_FARM heuristic identified a large number of embedded external links, suggesting a link farm designed to redirect users to potentially harmful sites. The presence of these links is the primary indicator of the attack pattern. 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://howtoadwords.net/uploads/1/3/0/2/130288458/6052499.pdf
    • http://ez-pz-pay.com/uploads/1/3/0/7/130740141/8cc26779.pdf
    • http://ba1d0.bpmtc.com/uploads/1/3/0/7/130775434/4004092.pdf
    • http://babaju.us/uploads/1/3/0/2/130272573/jipezolewefataduwose.pdf
    • http://roatansundowners.com/uploads/1/3/0/5/130589320/dezan-nipudimu-rotovisuzux.pdf
    • http://niffianva.com/uploads/1/3/0/3/130323603/2461316.pdf
    • http://www.huibangren.com/uploads/1/3/0/3/130323281/taduzewu-patorabagapubik-fejozojifo.pdf
    • http://magillah.com/uploads/1/3/0/2/130289259/juzige-xatew.pdf
    • http://ocwpublishing.com/uploads/1/3/0/5/130589184/kifolowowovow_suvolosivugun_turunino_fugitu.pdf
    • http://alchemystvapes.com/uploads/1/3/0/2/130289185/dixuguxiwitasijiges.pdf
    • http://mindandbodydallas.com/uploads/1/3/0/7/130776619/5254251.pdf
    • http://alohawraps.co/uploads/1/3/0/6/130639444/jesosepulogi.pdf
    • http://befreetherapy.com/uploads/1/3/0/6/130621960/130621960.html#metabolic+acidosis+compensation+calculator

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ee2.bin
b987735da958134b040b15b9c11ad47dfa48c1fe706af906b5843a5a83bfdfbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE2 8360 bytes

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