Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd49d00ac128cdf8…

MALICIOUS

PDF

39.5 KB Authoring application: pdf-parser
MD5: 20236678f6f480cbd72f198602c96ad3 SHA-1: 3e7346e36ee9a81200d30ad5de3cb8fcda3ff6e0 SHA-256: dd49d00ac128cdf8ce8bbd6f8e502d3bd2e5a3583c07127cb7f593b03e487ba4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The PDF_SEO_LINK_FARM heuristic identified a large number of embedded external links, suggesting a link farm designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains some of these URLs, reinforcing the attack pattern.

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://virtualbiblestudies.com/uploads/1/3/0/6/130639145/e32cebdd21b4.pdf
    • http://precisionfashioninstruments.com/uploads/1/3/0/7/130775624/3464388.pdf
    • http://tagbyswag.com/uploads/1/3/0/4/130483153/14eec0c78c0.pdf
    • http://wifeycosmetics.com/uploads/1/3/0/6/130640174/67bf3c0.pdf
    • http://mscmyservicecleaning.com/uploads/1/3/0/4/130494636/vazoramo.pdf
    • http://xoglamaccess.com/uploads/1/3/0/2/130288709/xagizawamosuje.pdf
    • http://www.macarthurbraids.com/uploads/1/3/0/6/130639532/pokob.pdf
    • http://steepingleaves.com/uploads/1/3/0/2/130287472/woxuwixogax.pdf
    • http://comedysanantonio.com/uploads/1/3/0/7/130740597/4291631.pdf
    • http://aohandmade.org/uploads/1/3/0/5/130538836/e545a72.pdf
    • http://carwashpumprepair.com/uploads/1/3/0/5/130551155/7894989.pdf
    • http://nothingtotriflewith.com/uploads/1/3/0/5/130588270/nezixowobakuxed_febejipanopek_kezos.pdf
    • http://gravanza.com/uploads/1/3/0/7/130776032/dozuvusewiwemufun.pdf
    • http://junbinow.com/uploads/1/3/0/6/130620584/vomuwupaluziduv.pdf
    • http://moosemanormi.com/uploads/1/3/0/2/130288307/c558c879a.pdf
    • http://complimaxllc.com/uploads/1/3/0/6/130639653/fifipota_joluvupejiritag_wujulazun.pdf
    • http://jasonmetsa.net/uploads/1/3/0/6/130604010/9282637.pdf
    • http://easternhomeinspect.com/uploads/1/3/0/6/130620382/tobuxelo_tavepisazimun_bajanubaxit.pdf
    • http://myeclecticyoga.com/uploads/1/3/0/7/130775978/225330.pdf
    • http://bloucheroregon.com/uploads/1/3/0/7/130775593/dejifokekunemob.pdf
    • http://darcyrylander.com/uploads/1/3/0/3/130379488/rakomu.pdf
    • http://retiredmind.net/uploads/1/3/0/3/130379597/3594281.pdf
    • http://creativewondersart.com/uploads/1/3/0/4/130483443/fulerabiwonuwu_tipet_nodif_fubub.pdf
    • http://stallionpridecapitalmanagement.com/uploads/1/3/0/7/130739658/130739658.html#blues+licks+harmonica

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000384c.bin
0020e4df72db98c19aa5d22aa49a575c66a4c02b23288110d9cb51f0f5210919		 pdf-font-stream PDF embedded font (sfnt) at offset 0x384C 7872 bytes

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