Malicious PDF — malware analysis report

Static analysis result for SHA-256 92b4a94dc14162bb…

MALICIOUS

PDF

42.4 KB Authoring application: LibreOffice Draw
MD5: 6a80b729c55a1ec0abf8d799e9a950e4 SHA-1: eb8b438a14371f2d8842449c09140db4e958c2ff SHA-256: 92b4a94dc14162bbd1c2480f0f79b1499c41faed5cd07ec497a32252a8fc5338
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. This suggests the document's primary purpose is to direct users to a network of websites, likely for malicious purposes such as phishing or SEO spam. The ClamAV detection further supports its malicious nature. No scripts were extracted from this sample.

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://www.pdfarms.com/uploads/1/3/0/5/130589146/9477789.pdf
    • http://fnvv.com/uploads/1/3/0/4/130483232/jutijideg-fanizixuloxepev.pdf
    • http://www.lonewolftrek.com/uploads/1/3/0/2/130287845/zafewasuve_jiwefoj.pdf
    • http://julietlambert.com/uploads/1/3/0/8/130813859/nipupiwufa_kaxifadonum_fifafur_vevizowe.pdf
    • http://nerdsville.org/uploads/1/3/0/7/130738567/limaporal-fafamizije.pdf
    • http://fabricoftheearth.com/uploads/1/3/0/6/130604244/povejabezema-xoxawipe-tirafufuwom-sikuvufe.pdf
    • http://goshenacres.com/uploads/1/3/0/5/130550696/5077279.pdf
    • http://www.sexyandseductivegu.com/uploads/1/3/0/6/130639733/6250607.pdf
    • http://baigoftricksentertainment.com/uploads/1/3/0/7/130776661/654216.pdf
    • http://www.cleansmartva.com/uploads/1/3/0/7/130775936/pusezoborexosu.pdf
    • http://willowdalecrane.com/uploads/1/3/0/6/130620491/fexoxisufo.pdf
    • http://speelkoning.net/uploads/1/3/0/6/130620584/130620584.html#american+heart+association+antibiotic+prophylaxis+guidelines+dental
    • http://www.sexyandseductivegu.com/uploads/1/3/0/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000040d9.bin
e2a609504f31aba74360c8f97aead3d8f97c76e888a653261413c8bef59e3205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40D9 2884 bytes
font_01_sfnt_off00004d3c.bin
a42414bdff22e9b8d3b1ebd1ce35af5fbf78ef439205204f4bf81927f8e6ec83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D3C 8432 bytes

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