Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6522845a61d7dd9…

MALICIOUS

PDF

62.4 KB Authoring application: ImageMagick
MD5: 1374aca1b44995e719a7cdff1ba342d2 SHA-1: 2769f1e5601e7986ea0f2c63237031f494c5b336 SHA-256: d6522845a61d7dd954b054a03d155228d5b5aaed41ae375440625f7a744ae888
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically classified as phishing. The embedded URLs are the primary indicators of compromise, likely serving as a distribution point for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://swflhandyman.com/uploads/1/3/0/6/130620747/jadaxokokedefifitom.pdf
    • http://summitsalesrecruiting.com/uploads/1/3/0/5/130590665/7476059.pdf
    • http://apkroad.com/uploads/1/3/0/5/130590339/707568.pdf
    • http://somersetfoodtrail.org/uploads/1/3/0/5/130589218/130589218.html#large+bilateral+pulmonary+embolism+icd+10

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000108a.bin
cc119942b70f3bb7199fe090dfccce1679e94a80deee83f832de2322d8d3b883		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108A 9168 bytes
font_01_sfnt_off0000a648.bin
1b3f82cd74c5b6671cc0c0d4a6c7877b74bb57ca469b2a61ef541918e41af838		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA648 2652 bytes
font_02_sfnt_off0000af15.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF15 16036 bytes

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