Malicious PDF — malware analysis report

Static analysis result for SHA-256 9478ad645130e675…

MALICIOUS

PDF

34.0 KB Authoring application: pstoedit
MD5: aee855411844aba1cd2be15e5c18e1b6 SHA-1: 8337c73ff29a1071d1f684c6409fa6d52d53b920 SHA-256: 9478ad645130e6758f309cfcaab32e3b37fb881490d7627255d76125fc88745f
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which follow a similar structure of '/uploads/1/3/0/X/...' and end in a .pdf file. This suggests a coordinated effort to distribute malicious content or redirect users to phishing sites. The ML classifier and ClamAV detection further support the malicious nature of this file.

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 https://github.com/aircrack-ng/aircrack-ng
    • http://mesawindshieldrepair.com/uploads/1/3/0/3/130313005/4264337.pdf
    • http://bhelandscaping.com/uploads/1/3/0/6/130620820/1169569.pdf
    • http://www.elitemediaproductions.co.uk/uploads/1/3/0/2/130272390/saninadug.pdf
    • http://mytipzeesips.com/uploads/1/3/0/7/130776612/771213.pdf
    • http://thewandererreturns.com/uploads/1/3/0/6/130620937/49dfe63f0d882.pdf
    • http://elizabethjostes.com/uploads/1/3/0/7/130775958/64bb2b3.pdf
    • http://naturalpeoplecleanfreshandgreen.com/uploads/1/3/0/5/130545096/7415896.pdf
    • http://captivashop.com/uploads/1/3/0/5/130544067/neloz.pdf
    • http://cbenedict.com/uploads/1/3/0/7/130739567/936740.pdf
    • http://www.mvsamui.com/uploads/1/3/0/8/130874219/poxupok_lopetuwiwe.pdf
    • http://culezona.eu/uploads/1/3/0/5/130543107/eb088e4e1be5.pdf
    • http://sand-highway.com/uploads/1/3/0/5/130550986/c183c8ec1f7ffc.pdf
    • http://www.facilitatethefuture.com/uploads/1/3/0/6/130605273/e50de68d72b.pdf
    • http://unmaskingthebiasphere.com/uploads/1/3/0/2/130274258/9b9ff6f9722bb36.pdf
    • http://chanah-haddad.com/uploads/1/3/0/5/130590273/semepuwozilol-zireda-vetomajaz.pdf
    • http://gi30q.slpny.com/uploads/1/3/0/4/130476148/130476148.html#how+to+use+aircrack-ng+on+windows+8.1
    • http://www.mvsamui.com/uploads/1/3/0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a45.bin
648b1ff8d636af7ea0422e240d451e177635f89b40440dc7c38501c4b0ccd270		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A45 7732 bytes

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