Malicious PDF — malware analysis report

Static analysis result for SHA-256 712469ffbb4b0775…

MALICIOUS

PDF

42.2 KB Authoring application: Inkscape
MD5: 019f229fcc4a584a33bf034452860e2f SHA-1: 5a0bf6ae13de55333113c50d99b97fad8871aed5 SHA-256: 712469ffbb4b0775b16994612a79de3a8e86eb8966cec417245d2120d27e09cc
152 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier. Static analysis revealed a PDF containing a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious sites. The document body contains obfuscated text and the URLs suggest a link farm designed to distribute further PDF 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://middlerhoadclothing.com/uploads/1/3/0/5/130551063/ac2b5507b021c4c.pdf
    • http://balmingileadskincare.com/uploads/1/3/0/2/130274304/goguxabeginopuk.pdf
    • http://suv.neupustishans.ru/uploads/2020/01/28/3170017.pdf
    • http://bikopub.imperiya.top/uploads/2020/01/28/6714691.pdf
    • http://realitycure.com/uploads/1/3/0/6/130639787/e54a25.pdf
    • http://nutmeg-labradoodles.com/uploads/1/3/0/5/130590666/poguguni.pdf
    • http://seizediem.com/uploads/1/3/0/5/130589229/130589229.html#orthobullets+ac+dislocation

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001266.bin
f920d90aa86e24e12f3a69ca9fd958bb9cfb450493ad70487589752536b733bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1266 8700 bytes

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