Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf0c2069dac931bb…

MALICIOUS

PDF

42.9 KB Authoring application: LibreOffice Draw
MD5: c583f20d082e1f556caa145a453f8ef9 SHA-1: b6a4cc1db2336fca3a9a568f24f7e93bc186df4a SHA-256: cf0c2069dac931bb3a3c16bedffb004acb457f1c473bc552a55fa661c2ee2bce
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with phishing or a downloader. 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://project25.org.uk/uploads/1/3/0/9/130969034/titexoxunotije-ditevadivadote-zoduja.pdf
    • http://crdirtandservices.com/uploads/1/3/0/5/130540293/vobotevuxowojob_bulonekil_vezab_lidowajunuj.pdf
    • http://www.graybeardadventure.com/uploads/1/3/0/5/130550880/jogedezemozagav.pdf
    • http://sassyelephants.net/uploads/1/3/0/7/130739628/5c72da0.pdf
    • http://mta-sts.mail.renosalsa.com/uploads/1/3/0/2/130288507/nudotot_sumim.pdf
    • http://urbanaffluence.co/uploads/1/3/0/8/130813483/waregulew.pdf
    • http://sista-dolls-vibrations.com/uploads/1/3/0/5/130590043/tebajuj.pdf
    • http://www.redgreenplumbing.com/uploads/1/3/0/6/130620478/jipasepa-bawedugi-pinom.pdf
    • http://mail.757careercoach.com/uploads/1/3/0/6/130621439/3997324.pdf
    • http://abnerdelnorte.com/uploads/1/3/0/6/130620384/7270133.pdf
    • http://victoriafacella.com/uploads/1/3/0/7/130738871/gugiduf-piwap-dazepuver.pdf
    • http://tranquilityhomes.org/uploads/1/3/0/4/130491271/7700855.pdf
    • http://smallrental.com/uploads/1/3/0/4/130483086/5096429728272e.pdf
    • http://spatialperspectives.org/uploads/1/3/0/6/130620828/5145777.pdf
    • http://vpgrou.brdge.org/uploads/1/3/0/7/130775029/130775029.html#what+is+the+difference+between+arithmetic+progression+and+geometric+progression
    • http://project25.org.uk/uploads/1/3/0/9/1309
    • http://site84012.mywhc.ca/uploads/1/3/0/3/130313410/nugamudajodokud.pdf

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002af9.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF9 2652 bytes
font_01_sfnt_off000033d7.bin
3da9f44393dc9b7bdce08bf8b98252a75302f408e28baac3b66e2b9d9dc58941		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33D7 16152 bytes
font_02_sfnt_off00004ba8.bin
77c690f310906f35d519435e9316e285771e0b865b5666b22a2b26f4b8fa7c4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BA8 8192 bytes

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