Malicious PDF — malware analysis report

Static analysis result for SHA-256 667e6fa144a6e6bd…

MALICIOUS

PDF

42.0 KB Authoring application: pstoedit
MD5: 7023f49abbbaa11e151a2c7cbf1be78f SHA-1: 3229f722e0feb561c21b6b13ef9582e066cd4fd7 SHA-256: 667e6fa144a6e6bd0c40d95a310224c1efda772a1d9720f1a9551452b350d0c3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm or redirection scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary indicators of compromise, as they are likely used to redirect the user to malicious 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://www.unityofstockton.com/uploads/1/3/0/5/130539597/vidazidexotewurawoj.pdf
    • http://wnyfaafa.org/uploads/1/3/0/5/130543386/6450766.pdf
    • http://essentialtouchoils.com/uploads/1/3/0/2/130273624/bupuku.pdf
    • http://jackedupdieselperformance.com/uploads/1/3/0/2/130289736/zuzenotapamuni.pdf
    • http://run-u-nut.net/uploads/1/3/0/5/130588403/9044097.pdf
    • http://schemmproductions.com/uploads/1/3/0/3/130323616/zotagezifamin.pdf
    • http://mta-sts.mxe.satokatzbengals.com/uploads/1/3/0/5/130588708/rotojatoputojal.pdf
    • http://mitchellgribbroek.com/uploads/1/3/0/6/130620341/fexamoxamalobikep.pdf
    • http://lamosproductions.org/uploads/1/3/0/2/130272629/2c33fd.pdf
    • http://harvestleaders.org/uploads/1/3/0/3/130323260/d976b9676f86e92.pdf
    • http://everyday-tennis.com/uploads/1/3/0/4/130488304/adcb0668a6.pdf
    • http://www.sheareigns.com/uploads/1/3/0/8/130874529/povabakonisugo.pdf
    • http://autodiscover.baas-finance.nl/uploads/1/3/0/7/130775156/58ef8e6.pdf
    • http://thinkbright.co/uploads/1/3/1/0/131070226/nizodikibudufifali.pdf
    • http://www.balancedwaw.com/uploads/1/3/0/9/130968920/bexapugarovezag.pdf
    • http://aiofyou.org/uploads/1/3/0/5/130588921/7116e4.pdf
    • http://colorofyourmoney.com/uploads/1/3/0/3/130379803/bebufawuxus.pdf
    • http://myoexercise.com/uploads/1/3/0/4/130489351/pipuwim-xumamolariwa-xirodisofesero-pomamemobaf.pdf
    • http://myentouragemusic.com/uploads/1/3/0/6/130604136/powebunesedujekep.pdf
    • http://acquiringfitnessllc.com/uploads/1/3/0/9/130969921/sabotodo.pdf
    • http://simplyessentiallife.com/uploads/1/3/0/2/130288321/fuwobajimu.pdf
    • http://portalfarmaceutico.net/uploads/1/3/0/3/130379821/373327.pdf
    • http://mydatadriven.com/uploads/1/3/0/6/130604641/4301731.pdf
    • http://xt2i7j.bdgct.com/uploads/1/3/0/8/130813400/130813400.html#example+action+research+in+about+absenteeism+of+pupils

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004305.bin
40f548b6f5d966a8888a26d9d0d560172cd8887c08d812124d893c305cf927ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4305 7560 bytes

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