Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c860ff5ad3114b…

MALICIOUS

PDF

74.9 KB Authoring application: PDFBox
MD5: c0efa8e23456653f87805500efdfe0ef SHA-1: 1472906dd0cfbe469d4b4e25e53c1059e82c9e3e SHA-256: 57c860ff5ad3114b2a6ab20de8a8c2e0e0e8742116f55b07f38e0b0f0b7b776c
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a common technique for phishing or distributing further malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though partially corrupted, mentions 'Human resource management pdf in telugu' and includes URLs that appear to be part of a link farm, suggesting a lure to download malicious files or visit phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://northeastmolosserdogclub.org/uploads/1/3/0/5/130542985/muxesa.pdf
    • http://kurthindustries.com/uploads/1/3/0/3/130323724/8521540.pdf
    • http://singaporenails.com/uploads/1/3/0/7/130740522/e8771a165f6a4.pdf
    • http://mendocinorose.com/uploads/1/3/0/4/130488299/7478641.pdf
    • http://multistreams.com/uploads/1/3/0/4/130492315/130492315.html#human+resource+management+pdf+in+telugu

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001279.bin
8c10884ecff495dd8d613c14b858b07ed37b4b974f341287fa4f6b683db2bf2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1279 12484 bytes
font_01_sfnt_off0000d6c8.bin
da097a8c459adbfdf1b1d97412e41569b305acf822c6e113ff3e46e38a168572		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C8 16224 bytes
font_02_sfnt_off0000eb9f.bin
236d54f3e2479d5e72da3d1be4616617e509581c3e9108e812f40a19f40d28ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9F 2228 bytes

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