Malicious PDF — malware analysis report

Static analysis result for SHA-256 13811b29737ecf0b…

MALICIOUS

PDF

35.6 KB Authoring application: Smallpdf Desktop
MD5: dfbc5aedfb998e72a648f99318ba86a1 SHA-1: 203e4adf24e1787e3bea7e3be0d0c9eec99fc8f8 SHA-256: 13811b29737ecf0bf0a7ca81b9994c94ec00e7e60581665fe72f57e0814847b8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded URLs pointing to other PDF files, indicating a link farm or a distribution mechanism for further content. ClamAV and ML classifiers flagged this as malicious, specifically as a phishing or robot-related PDF. The embedded URLs are the primary indicators of malicious activity, suggesting the document's purpose is to redirect users to potentially harmful sites.

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://top1percenter.com/uploads/1/3/0/2/130271171/9379258.pdf
    • http://dpcontainers.net/uploads/1/3/0/5/130589252/zixagaxur-lojojaketijobav-figedipepazalur-dewafanu.pdf
    • http://hadtoomuchcaffeine.com/uploads/1/3/0/5/130590363/kumene_lovapizekaxom.pdf
    • http://iloveacorns.com/uploads/1/3/0/2/130271161/xeliwibotovezaf_forasizizi_murixopi_ruvelezuzuge.pdf
    • http://bridgeequitiesadvisor.com/uploads/1/3/0/7/130739922/tixopeparajorap.pdf
    • http://menonlyadventures.com/uploads/1/3/0/5/130588922/3835770.pdf
    • http://gracecarlisle.com/uploads/1/3/0/8/130874617/ziwevipef.pdf
    • http://homecyberprotect.com/uploads/1/3/0/5/130543310/5691712.pdf
    • http://infoapartamento.net/uploads/1/3/0/2/130289226/gapitumidevemu.pdf
    • http://multistreams.com/uploads/1/3/0/5/130589205/130589205.html#werewolves+of+millers+hollow+narrator

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001415.bin
d986710b97ec27482bbcd9f5d36f22013be160ba1cbf398b698623283f9b2281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1415 8492 bytes

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