Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b2c18fa1db4ebe5…

MALICIOUS

PDF

35.0 KB Authoring application: Adobe PDF Library 9.0
MD5: 8a169fc2e795be1c0bba762a45cf4b31 SHA-1: f7644bbc8be1973b06986a6ebe2d4c45f3fb05dd SHA-256: 2b2c18fa1db4ebe5228ce8c162e797b3e24966d2a9030001c51b0ee5080256ef
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, a technique commonly used in SEO poisoning and phishing campaigns to drive traffic to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports this assessment. The document body itself does not contain actionable text, but the heuristic firings and the extensive URL list strongly indicate a malicious intent to redirect users.

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://nikiclickit.com/uploads/1/3/0/7/130775447/xakunaraxigakomujuma.pdf
    • http://magicalcryptofriends.net/uploads/1/3/0/5/130588286/3476591.pdf
    • http://rockthecatspa.biz/uploads/1/3/0/3/130323510/4734004.pdf
    • http://classicmotorcycle.com/uploads/1/3/0/6/130620966/6324472.pdf
    • http://analog.marketing/uploads/1/3/0/6/130604795/5d0ff8a7ef2096f.pdf
    • http://cohorsiustorum.org/uploads/1/3/0/3/130323260/tirunofokonide.pdf
    • http://nadanashart.com/uploads/1/3/0/6/130605462/127275.pdf
    • http://missiononce.org/uploads/1/3/0/4/130435726/1385529.pdf
    • http://premiumdealsclub.com/uploads/1/3/0/5/130546803/pugemagoduzos-vipetabasab.pdf
    • http://relaxitswater.com/uploads/1/3/0/6/130639624/lotogirutevev_vakilemuxuxesez_digotepukavivi_gawujobif.pdf
    • http://www.aroma-rodhom.com/uploads/1/3/0/2/130288753/2868138.pdf
    • http://lebojin.br3h.com/uploads/1/3/0/8/130814100/130814100.html#crosby+safety+valve+jbs

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000025c3.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25C3 2616 bytes
font_01_sfnt_off0000313c.bin
edf2b3609f0894b86de94c54d4baa6d7e6dc888ecdddad27009d9c9e8d64f886		 pdf-font-stream PDF embedded font (sfnt) at offset 0x313C 7848 bytes

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