Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbfa711731fe71f1…

MALICIOUS

PDF

34.4 KB Authoring application: Inkscape
MD5: 37bb68ebdd281fb1ef8f07ef3f51a99d SHA-1: 9f0436da1829bce4cef757f0910bfcd34bc5c381 SHA-256: fbfa711731fe71f113a8df13f9926ba218a30eef0f59881bcbf312d4d746ec0d
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files hosted on various domains, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily corrupted, contains text related to file conversion and includes URLs, reinforcing the link farm 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://smallwar.studio/uploads/1/3/0/5/130588377/90b4b0749.pdf
    • http://beeldschermverhuur.nl/uploads/1/3/0/7/130775166/ruxexatovi.pdf
    • http://nashvilleaquaticsupplies.com/uploads/1/3/0/2/130272575/ramureganiwowir-saravese.pdf
    • http://bloggingwithbray.com/uploads/1/3/0/8/130814197/8721043.pdf
    • http://doverfirstsda.com/uploads/1/3/0/7/130738875/1806563.pdf
    • http://goldago.com/uploads/1/3/0/2/130291689/mezetitoza.pdf
    • http://nmediadigital.com/uploads/1/3/0/2/130274098/wikuzoxabo.pdf
    • http://cup054.com/uploads/1/3/0/7/130776647/xugawebelebijodifa.pdf
    • http://mohamoudegal.com/uploads/1/3/0/6/130620917/zezezipaxoz_rezirelexoma_setev.pdf
    • http://lattesandmore.com/uploads/1/3/0/7/130739994/vuzuzikeli_lafogategiw.pdf
    • http://olmecaclean.devsite-1.com/uploads/1/3/0/5/130541384/130541384.html#convert+pdf+file+to+ms+excel+online

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002de6.bin
9b9d3b29eb8bc5baaa6b4e57e32c21dfd83a1c8fcb1077621d034f2c3c38cfe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE6 9028 bytes

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