Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc7de2026d3be21…

MALICIOUS

PDF

34.7 KB Authoring application: pstoedit
MD5: 9f1c8acd10cc47f5315a9a5d92928fef SHA-1: d061f6a793972e4d1b0faa6b05281dbff5ee38dd SHA-256: 5bc7de2026d3be213944b8fc8d2b82ad4d7631581835faec6eed98dcd5b176ac
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many of which point to other PDF files hosted on 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 further support its malicious nature. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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://overthetopeventsne.com/uploads/1/3/0/6/130621354/famamavofoba-deluvofaketa-siliteki-fogul.pdf
    • http://www.leominsterdeanerysynod.org.uk/uploads/1/3/0/8/130814001/woxopedupabaz.pdf
    • http://katrinaandco.com/uploads/1/3/0/7/130775897/nozosa.pdf
    • http://hostmaster.stijndewulf.com/uploads/1/3/0/8/130874369/xukof-mukikebuvopes-sugawirawudorob.pdf
    • http://mta-sts.zmfarabian.com/uploads/1/3/0/5/130540246/594661.pdf
    • http://www.garagedoorrepairmalibu-ca.com/uploads/1/3/0/6/130639493/miguxasunotesuxul.pdf
    • http://cpanel.varnialee.com/uploads/1/3/0/2/130272101/dc9ea.pdf
    • http://color4home.com/uploads/1/3/0/6/130620747/womubox.pdf
    • http://ministrystudy.org/uploads/1/3/0/7/130738969/963117.pdf
    • http://centralasiaadvisors.com/uploads/1/3/0/2/130289524/6017500.pdf
    • http://bluehelpfulhonda.com/uploads/1/3/0/6/130621701/mudugagadal.pdf
    • http://444.bpmtc.com/uploads/1/3/0/8/130873849/130873849.html#agilent+gc+liner+selection

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003118.bin
b2b44552627644485a9edb48871cd6c3988369621cafe0c336c9d847c6ffe73b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3118 7812 bytes

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