Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f7a259dbf043493…

MALICIOUS

PDF

55.5 KB Authoring application: ImageMagick
MD5: 1b469f2384b7414d016949effd7b29f9 SHA-1: e54b6568411514bd1940e8c98ea091f66eb513a2 SHA-256: 3f7a259dbf043493c80d1a91415faf32218ff05f3d018fb58502ed5b287d0250
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. ClamAV also detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0. The primary attack pattern involves directing users to a multitude of PDF files hosted on various domains, suggesting a link farm or distribution network for malicious 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://mryu.net/uploads/1/3/0/2/130287462/a663c9fdc2.pdf
    • http://psrglobal.net/uploads/1/3/0/6/130639845/7248859.pdf
    • http://muvaso.fr/uploads/1/3/0/6/130621649/7477145.pdf
    • http://jaminspiraedu.com/uploads/1/3/0/7/130738708/mulujita.pdf
    • http://zagleverage.com/uploads/1/3/0/2/130288893/2569068.pdf
    • http://learnonlinefast.com/uploads/1/3/0/5/130589240/02bd4bc555ea.pdf
    • http://youandepression.com/uploads/1/3/0/5/130588345/ranojotol.pdf
    • http://soontravelagency.net/uploads/1/3/0/7/130739198/213b9000333.pdf
    • http://trawallaprimary.com/uploads/1/3/0/6/130605240/e42183a1c8482cb.pdf
    • http://novamotorshaiti.com/uploads/1/3/0/5/130551391/riwusisogeka-funuguwotivul-tefat-detozomavagek.pdf
    • http://www.gatewayevents.co/uploads/1/3/0/2/130289266/selabox_miwarimubasa_wixofomaradode_zejoxudosufo.pdf
    • http://the-bandaid-project.com/uploads/1/3/0/2/130272266/xamuzowutarupu.pdf
    • http://www.elizabethparkerportfolio.co.uk/uploads/1/3/0/6/130604933/dd456.pdf
    • http://bardosteamcolorado.bardosdiamondsports.com/uploads/1/3/0/6/130639751/130639751.html#empirical+treatment+of+neonatal+sepsis+are+the+current+guidelines+adequate

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fe7.bin
cd5b04feeae1aab24d32ec675b888b21b71c4a17e467ce630bfa86e07139397e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE7 2704 bytes
font_01_sfnt_off00007c91.bin
ade5fe38eb3e0675a6dff5e1412e688e308f269eda305c1cd84d271b5be9499f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C91 9424 bytes

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