Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2882739dc99142…

MALICIOUS

PDF

40.2 KB Authoring application: Scribus
MD5: 255a1c8a7a6429ec06441317027733ed SHA-1: 9f0347a8b61930763ffe70795ee968efade4593a SHA-256: af2882739dc9914245478328703070f011f97a79ac7842d4ba5b9a75dd5587c6
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or distribution mechanism. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the sheer volume of external links points to a coordinated effort to direct users to potentially harmful content.

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://shinyshoping.com/uploads/1/3/0/5/130588806/peserewuzagizujujul.pdf
    • http://troshkov.org/uploads/1/3/0/5/130539091/90d3b9c.pdf
    • http://bperfectgels.net/uploads/1/3/0/8/130874239/1175063.pdf
    • http://redeemeryouth.net/uploads/1/3/0/7/130775675/mefilexixot-tewogukifer-vevemi.pdf
    • http://eftcon.com/uploads/1/3/0/6/130639977/eee3a303.pdf
    • http://neisweets.com/uploads/1/3/0/6/130604449/5ed205c1ff3.pdf
    • http://arctictreasures.shop/uploads/1/3/0/7/130775737/gugedadajesidapap.pdf
    • http://camerasquare.net/uploads/1/3/0/6/130621233/bupotubunigufaxu.pdf
    • http://walleywag.com/uploads/1/3/0/4/130436410/kobatulaxa.pdf
    • http://garagestorageadvice.com/uploads/1/3/0/4/130489650/tepokipujezoza-vesefet-fumeguj-tegususi.pdf
    • http://bannerch.org.tw/uploads/1/3/0/6/130621178/boresifuwim.pdf
    • http://walk-ng.com/uploads/1/3/0/2/130287284/14bc77187c05.pdf
    • http://cardosoconsultoria.net/uploads/1/3/0/7/130776629/wadejarekoma.pdf
    • http://babsandbadeboutiques.com/uploads/1/3/0/8/130873784/xijatisakafenewiref.pdf
    • http://webmail.creativevisionhome.com/uploads/1/3/0/5/130589137/9598393.pdf
    • http://premedpursuit.com/uploads/1/3/0/5/130550750/welupepuboridatopaso.pdf
    • http://thefieldofpossibilities.com/uploads/1/3/0/6/130603917/dovutaxoxorupok.pdf
    • http://bedroomkandibytracidiva.com/uploads/1/3/0/5/130590111/besewawiridimajowuro.pdf
    • http://8n7.brdge.org/uploads/1/3/0/4/130476144/130476144.html#sample+thank-you+letter+to+a+special+education+teacher
    • http://shinyshoping.com/uploads/1/3/0/5/1

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004017.bin
78b86c42a42f3c4674f1436d2050dfc160e688da0343b4063bfb71277440b172		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4017 7812 bytes

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