Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c5969d647e534cf…

MALICIOUS

PDF

28.1 KB Authoring application: PDF Studio
MD5: f55a5b717de5b0ecac093b64084e0ffc SHA-1: 28ba14537de9693d9d5c33723518700337b003d0 SHA-256: 8c5969d647e534cf495323b4376eb3616790e091b29c944b86840e30e38675ab
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files across various domains. This behavior is indicative of a link farm or a phishing campaign designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly support its malicious nature.

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://iwonderwouldi.com/uploads/1/3/0/7/130776821/2204902.pdf
    • http://420fitness.jimmysjava.com/uploads/1/3/0/6/130604315/susuv_wulerokekegus.pdf
    • http://foreshadow.online/uploads/1/3/0/6/130604158/rusakipukix_samogom_gavel_todikivo.pdf
    • http://ooredoomaldives.net/uploads/1/3/0/6/130639205/d53ebc6403.pdf
    • http://gernielove.com/uploads/1/3/0/4/130488198/luwibebagaxamebo.pdf
    • http://webdisk.kucanadan.com/uploads/1/3/0/5/130588705/4340902.pdf
    • http://zamir.vodka/uploads/1/3/0/8/130815303/bavex-xurusas-jogoboporejoz-nuripawelipaniw.pdf
    • http://ccpstl.org/uploads/1/3/0/6/130605041/zoluwavod.pdf
    • http://focusonthenorth.com/uploads/1/3/0/5/130544790/roxosepomabam_mobefavu_vilanubok.pdf
    • http://resourcesforthesoul.com/uploads/1/3/0/7/130776476/kipuf-nexutaxiwoji-sojegajipipoda-dijunixiziru.pdf
    • http://positivepushkc.com/uploads/1/3/0/7/130775640/fivubapeni.pdf
    • http://possibilityengine.net/uploads/1/3/0/8/130874680/6155891.pdf
    • http://safebeautymovement.org/uploads/1/3/0/2/130272505/5927265.pdf
    • http://curlysue.eu/uploads/1/3/0/9/130969329/130969329.html#youtube+simon+and+garfunkel+are+you+going+to+scarborough+fair

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001767.bin
c60f52d51080948e73189d3c8b0ff791755e3e3573ef6bd16872021bbb85aa5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1767 6668 bytes

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