Malicious PDF — malware analysis report

Static analysis result for SHA-256 78270b58deb55121…

MALICIOUS

PDF

53.2 KB Authoring application: Poppler-utils
MD5: b76cb162cfd97ff2b142404233cca707 SHA-1: a003e34a0fab64233e1bae284697804bbd2dcbff SHA-256: 78270b58deb55121a1bac1fbb46f6fb5efcf33343c89ff921f31aedf40c0a619
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. ClamAV and ML heuristics confirm its malicious nature, specifically flagging it as phishing-related. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://outdoorkidsacademy.com/uploads/1/3/0/6/130640146/wadepelo-xevipatobe-memuju-jinazenoxabu.pdf
    • https://vuxebiwuteloza.weebly.com/uploads/1/3/0/2/130271158/da998.pdf
    • http://nkfanexperience.com/uploads/1/3/0/5/130544072/kogujagasozim_dawiduj_jitevazemug_desawisame.pdf
    • http://crazyjean.com/uploads/1/3/0/4/130492038/2824009.pdf
    • http://moodlabnewlife.nl/uploads/1/3/0/5/130551559/130551559.html#fireeye+cyber+security+report

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001113.bin
a4a86db8717c4d5d175544c610ebd9a7c3b218c4725c4d3493d035ff7454ac32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1113 9172 bytes

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