Malicious PDF — malware analysis report

Static analysis result for SHA-256 705a6df91d2fc570…

MALICIOUS

PDF

31.7 KB Authoring application: Adobe PDF Library 9.0
MD5: 54ad2b9d0884ba02b1c4f72e6d462ab1 SHA-1: 772ae4d35c5bfb75c2d02b1a9253594d96d287b7 SHA-256: 705a6df91d2fc570229a0e3057706cb3fdd4d82bf2ab07db9f82d997243b61fc
152 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, embedding numerous external links to other PDF files, which is a common tactic for SEO manipulation or distributing malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further indicate malicious intent. While no scripts were explicitly extracted, the embedded URLs are the primary indicators of compromise, likely leading to further malicious stages or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://lazybinaryoptionsignals.com/uploads/1/3/0/5/130551486/wufefo-bomagusibejexuk.pdf
    • http://bethany.fun/uploads/1/3/0/2/130291592/4070763.pdf
    • http://northbrisbanemortgagebrokers.com.au/uploads/1/3/0/3/130323362/vugapibe_muvavoraka_tojopujebototu.pdf
    • http://discoveryislandschamber.com/uploads/1/3/0/4/130488172/4a0d30d3d048.pdf
    • http://255alhambra.com/uploads/1/3/0/6/130603918/1ce1255a8f15b6.pdf
    • http://spcwelding.com/uploads/1/3/0/4/130436079/dizobamotojerit-fufajuloxatoli.pdf
    • http://msmcelroy.net/uploads/1/3/0/5/130588531/9959438.pdf
    • http://peve.mari4ka.ru/uploads/2020/01/29/1571474.pdf
    • http://zewo.dateurbate.club/uploads/2020/01/29/2258601.pdf
    • http://rar.biohimchistka.ru/uploads/2020/01/28/gosokorarifew.pdf
    • http://dhshighschool.com/uploads/1/3/0/4/130477252/1a83dc.pdf
    • http://adoptme.info/uploads/1/3/0/6/130621063/130621063.html#beams+plus+flannel+check+guide+shirt

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012b6.bin
481eaa609435d7dd0f11ce63c06dc87605f9b8723b81aeb8727d502562c35d43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B6 8160 bytes

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