Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2edd964ba4db9fd…

MALICIOUS

PDF

32.8 KB Authoring application: Serif PagePlus
MD5: 2c39091975c4cfa7cacf5a86594ceb7b SHA-1: df8073fa5c8e206158c9742ea7fcd7f4895eca52 SHA-256: f2edd964ba4db9fdc376b24cfa5e89bf169062ee31d32e87720848734caaeb79
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified as a link farm, which is a common technique for distributing malicious content or conducting phishing attacks. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though partially corrupted, references kindergarten worksheets, a common lure to disguise the malicious nature of the links. The primary attack pattern involves redirecting users to external PDF files hosted on various domains, likely to serve further malicious payloads or phishing pages.

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://migeorgeson.com/uploads/1/3/0/4/130436441/949231.pdf
    • http://beradiantlyraw.com/uploads/1/3/0/7/130739544/mevajuron_mudemogeti_nilejazuxug_fedut.pdf
    • http://amazonpropertymanagement.us/uploads/1/3/0/7/130740497/9996265.pdf
    • http://avcanarias.com/uploads/1/3/0/5/130588687/rupaparomuterox-nowosi-varedalepigaf.pdf
    • http://objectpages.com/uploads/1/3/0/6/130621951/5115532.pdf
    • http://aesco.com/uploads/1/3/0/4/130488993/pegudupowexuten_nipipodoxamop_wabegujurur_kopamana.pdf
    • http://eudaimoniatravelblog.com/uploads/1/3/0/6/130604486/mejagoza.pdf
    • http://2020blue.org/uploads/1/3/0/5/130550654/dezepawavemodabef.pdf
    • http://ravencon.org/uploads/1/3/0/6/130621490/8488811.pdf
    • http://dogsrulesj.com/uploads/1/3/0/4/130488063/6279f73fadf.pdf
    • http://tintanegrahtx.com/uploads/1/3/0/2/130272500/magego.pdf
    • http://dlathleticadvantage.com/uploads/1/3/0/2/130270905/ninatika_zebesiledeve.pdf
    • http://systemskateboards.com/uploads/1/3/0/5/130551090/3508111.pdf
    • http://ineedexercise.com/uploads/1/3/0/6/130639983/65794.pdf
    • http://northpacifictrainingperformanceinc.com/uploads/1/3/0/6/130604928/5792902.pdf
    • http://karlheine.net/uploads/1/3/0/4/130436519/tizusa.pdf
    • http://architechart.com/uploads/1/3/0/2/130292179/5072140.pdf
    • http://arthurdogsontodd.com/uploads/1/3/0/7/130775201/nepariwe.pdf
    • http://epiphanrentals.com/uploads/1/3/0/7/130738893/zererulit.pdf
    • http://tinyestate.com/uploads/1/3/0/6/130604032/jidikofoj_zevaxo.pdf
    • http://livingnow.ca/uploads/1/3/0/7/130739711/misujud.pdf
    • http://sauerlandhypotheek.nl/uploads/1/3/0/7/130776462/130776462.html#abc+sheets+for+kindergarten

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002215.bin
771320cb40db5a89050da1508e3af25627e7da4246ee39b89f4405e584685809		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2215 6992 bytes

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