Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb36abec0851b68d…

MALICIOUS

PDF

60.8 KB Authoring application: LibreOffice Draw
MD5: 1d6d0680f43624ef9c649059239f1c41 SHA-1: 955ffccc76f1858fdedf2c7768707743236e871c SHA-256: cb36abec0851b68dff1f4c65c9484327b37960349caa1b908395b7d5d98fc487
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, forming a link farm. This is strongly indicative of a phishing or malware distribution campaign, as the document itself does not appear to contain substantial content beyond these links. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports this assessment. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://eacenter.org/uploads/1/3/0/3/130323581/6481170.pdf
    • http://marketyourselfsmarter.com/uploads/1/3/0/7/130739542/9909c593336.pdf
    • http://akronglobal.net/uploads/1/3/0/6/130621995/3725677.pdf
    • http://bambus.group/uploads/1/3/0/7/130776801/tojumedixutowobu.pdf
    • http://publiceyenetwork.net/uploads/1/3/0/5/130588670/majom.pdf
    • http://norcalsetac.net/uploads/1/3/0/6/130620614/4329622.pdf
    • http://tahmoorbaptistchurch.com/uploads/1/3/0/3/130323755/fuxureji.pdf
    • http://stasytyte.com/uploads/1/3/0/5/130539338/8113325.pdf
    • http://irfanbukhari.com/uploads/1/3/0/6/130603753/tutabeb.pdf
    • http://ngoji.com/uploads/1/3/0/3/130379821/tawagekowawo.pdf
    • http://aloha-sugar.com/uploads/1/3/0/5/130545185/simufut-larebetisetal-xutufovemonika-repunipirek.pdf
    • http://matio3d.com/uploads/1/3/0/8/130814235/2360602.pdf
    • http://www.lillyhouseofbeauty.com/uploads/1/3/0/6/130620302/02014573bc1b9bc.pdf
    • http://beverlyhillsboba.com/uploads/1/3/0/8/130814247/836313.pdf
    • http://investlifebalance.com/uploads/1/3/0/4/130476143/3dad0.pdf
    • http://wildernessadventureswest.com/uploads/1/3/0/5/130588695/4047584.pdf
    • http://makeartaliving.com/uploads/1/3/0/6/130640057/nuwemezaxovo_bamataru_duzafofojezo.pdf
    • http://webmail.bardosdiamondsports.com/uploads/1/3/0/5/130539936/130539936.html#radial+nerve+pain+dog

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001649.bin
684376929a6f902bad3214d64b670ac51bf3c11e88d14d5e81d5ae5d1a29be1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1649 8788 bytes

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