Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f5750895e08aef…

MALICIOUS

PDF

35.1 KB Authoring application: PDF Studio
MD5: 1715443331b52483bc43472f44d0cd2f SHA-1: 2ae877426ed1cc378e374e7a3339786c085d9f00 SHA-256: e0f5750895e08aef4f7d321039f6cce5892ec86b854d8a51cf4da4c48fc2213b
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique commonly used for SEO poisoning or phishing campaigns. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the critical heuristic 'PDF_SEO_LINK_FARM' strongly indicate malicious intent. The ML classifier also flagged this PDF with a high probability of being malicious. 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://locationperformance.com/uploads/1/3/0/6/130620898/2755772.pdf
    • http://truedefdl.com/uploads/1/3/0/4/130483940/jubupizubivo-lumudejize-terijinumufurul-xiguguvosizex.pdf
    • http://techsuny.com/uploads/1/3/0/7/130776672/xawaravodenanaz_wifoluruwonan_tufilunuxozu.pdf
    • http://www.jenssolutions.com/uploads/1/3/0/5/130543665/175bc305027.pdf
    • http://cash4goldcp.com/uploads/1/3/0/2/130270743/rotijefixunig.pdf
    • http://coachfro.com/uploads/1/3/0/7/130775932/8674162.pdf
    • http://www.tanyapinto.org/uploads/1/3/0/7/130740590/b6ebb512689e.pdf
    • http://nimehime.com/uploads/1/3/0/4/130435781/af87e305f1c5.pdf
    • http://gaoerfuxianchangbaijiale.jhamrick.com/uploads/1/3/0/3/130313453/filevi_gufikuk_zabenapira.pdf
    • http://tminz.net/uploads/1/3/0/8/130814021/e1d25e4745a02.pdf
    • http://jsvcom.com/uploads/1/3/0/2/130287533/wibakag-jotuwifonowi-pefitani.pdf
    • http://cell-connect.ca/uploads/1/3/0/4/130483773/03836e5.pdf
    • http://suface.solutions/uploads/1/3/0/7/130739744/130739744.html#howl+allen+ginsberg+full+poem
    • http://www.tanyapinto.org/uploads/1/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f12.bin
a116411271e60d4ade82c18290ceefae069414d21c5f0047c66d079129655d86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F12 8572 bytes

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