Malicious PDF — malware analysis report

Static analysis result for SHA-256 12afec1f5cc86b3b…

MALICIOUS

PDF

40.8 KB Authoring application: Smallpdf Desktop
MD5: 9e2287799baf40771e06916fcfa6b6f4 SHA-1: 927c4992ee4bdaffbc9efd84247c5d45d966c645 SHA-256: 12afec1f5cc86b3b9d8434ffe89b05ffee281001cb10514c02db7f0188c43c99
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. ClamAV detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0, and ML classification strongly indicates maliciousness. No scripts were extracted, but the sheer volume of external links suggests a malicious intent to redirect users.

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://lucasgarron.net/uploads/1/3/0/2/130291415/2047900.pdf
    • http://www.janpalson.com/uploads/1/3/0/3/130379094/xilivusege_fibimurosirekaf_fatawurufe.pdf
    • http://mx.jimjturner.com/uploads/1/3/0/9/130969980/nowilepat.pdf
    • http://mistersack.net/uploads/1/3/0/5/130551050/4788895.pdf
    • http://khanpurcrickettournament.com/uploads/1/3/0/5/130590036/7661733.pdf
    • http://gradecaddy.com/uploads/1/3/0/8/130813557/9327925.pdf
    • http://www.pocdogs.org/uploads/1/3/0/2/130288729/a69897ef7d.pdf
    • http://thisisbinding.com/uploads/1/3/0/6/130639675/f92ef7f11e.pdf
    • http://sharkbrosse.com/uploads/1/3/0/5/130540134/kapibagenegoturepopo.pdf
    • http://www.huubzeeman.nl/uploads/1/3/0/6/130603975/fokobe.pdf
    • http://wholesomevitamins.com/uploads/1/3/0/5/130539244/varuwigegij.pdf
    • http://anthonydcoleman.org/uploads/1/3/0/5/130540746/pafoduberodarifimo.pdf
    • http://nickclayton.sexy/uploads/1/3/0/4/130492038/5217397.pdf
    • http://www.timecraftedrenovations.com/uploads/1/3/0/9/130968972/6124072.pdf
    • http://www.fiberclassy.net/uploads/1/3/0/6/130621304/pivadugabodopexap.pdf
    • http://www.tiffcopp.com/uploads/1/3/0/3/130379227/8038021.pdf
    • http://camptishomingo.org/uploads/1/3/0/2/130270768/banulomisi_lixugaweg.pdf
    • http://myangelabartlett.com/uploads/1/3/0/6/130620578/d7534f07ebea7.pdf
    • http://www.sonsetministries.com/uploads/1/3/0/5/130590133/373787.pdf
    • http://hydrominer.net/uploads/1/3/0/2/130287463/8521730.pdf
    • http://www.tattoosmatter.com/uploads/1/3/0/6/130604759/1f12694.pdf
    • http://painstoppers.org/uploads/1/3/0/6/130622032/8716371.pdf
    • http://ceoclubuk.com/uploads/1/3/0/6/130604568/foxelamexudaxupener.pdf
    • http://delgeinc.com/uploads/1/3/0/4/130483178/130483178.html#management+of+pneumocystis+carinii+pneumonia

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c9b.bin
0cb216e49336fbcc7dc0c9f052cec8991747e70b598d627229fcbfcb4e227032		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C9B 8496 bytes

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