Malicious PDF — malware analysis report

Static analysis result for SHA-256 10ce3dad95c14b87…

MALICIOUS

PDF

45.2 KB Authoring application: Scribus
MD5: ba2b414d26efa419ca791039cbeab847 SHA-1: 60e52e021c57e072acc7ffae5cfd3b873049e619 SHA-256: 10ce3dad95c14b87569f842b23872757f85f003dfcfa153136c3bffad54ca00d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded external links to other PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are the primary indicators of compromise, suggesting a link farm designed to redirect 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://rusfermer.info/uploads/2020/01/28/057ef065863b83.pdf
    • http://noscopegaming.net/uploads/1/3/0/6/130620651/e3fc2d17d.pdf
    • http://donfranciscocigarstoo.com/uploads/1/3/0/3/130313314/2237079.pdf
    • https://pekuwajexet.weebly.com/uploads/1/3/0/6/130603772/rujiguni_fiwusidi.pdf
    • http://steuerschroeder.com/uploads/2020/01/28/4127026.pdf
    • https://penemunajebepu.weebly.com/uploads/1/3/0/5/130589277/2271821.pdf
    • http://jopujo.stellaz-66.ru/uploads/2020/01/28/buxof.pdf
    • http://toxicgolf.com/uploads/1/3/0/6/130620795/403031.pdf
    • https://rofuxili.weebly.com/uploads/1/3/0/6/130604459/mizajukomux.pdf
    • http://vesta-elit.ru/uploads/2020/01/28/tajekemi-vezejurulu-palaxojuriwitod-benedam.pdf
    • http://pab.highchance.top/uploads/2020/01/28/maraxatedenigelotid.pdf
    • https://jadukekazonabis.weebly.com/uploads/1/3/0/5/130539944/fivifutuzeke.pdf
    • http://monkeesconcerts.com/uploads/1/3/0/5/130590687/nubademinunot-kokaboduxeno-tedunomebixar.pdf
    • http://partyhaireverywhere.com/uploads/1/3/0/2/130287266/37c8f7ff0a366a.pdf
    • http://tim.zonaspasalon.ru/uploads/2020/01/28/wesib.pdf
    • https://mitepilonovizul.weebly.com/uploads/1/3/0/5/130550748/nezinarenaxim.pdf
    • http://myentouragemusic.com/uploads/1/3/0/6/130622061/130622061.html#excuse+letter+for+absent+in+school+due+to+fever+by+parents

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014cc.bin
898923678dfc1c17240273b2a6a9f4419daf34c488b9741405e0a94de613ad13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14CC 7968 bytes

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