Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac65960320fa5b95…

MALICIOUS

PDF

40.7 KB Authoring application: pdf-parser
MD5: fe68a9b9ed91861df8ef8b63629551cc SHA-1: bd79d7d59ef41718de14c5037765372a3cd0ca6a SHA-256: ac65960320fa5b95fee8dcf7e53b5c9d6d702aa930f23312a212a971b105c508
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection also flags this as a phishing-related PDF. The embedded URLs likely lead to further malicious content or phishing pages, aiming to exploit users through a link farm strategy.

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://tir.accessory-app.com/uploads/2020/01/28/gawoxojelegabubujazo.pdf
    • http://stocktalknow.com/uploads/1/3/0/3/130313368/potilefita-bukiz.pdf
    • http://boisebrunchbabes.com/uploads/1/3/0/2/130289184/2722437.pdf
    • http://mycdcfbc.com/uploads/1/3/0/3/130323229/nipogupivap.pdf
    • http://norcaldjs.net/uploads/1/3/0/6/130604820/volejiduvofoz.pdf
    • http://withlovec.blog/uploads/1/3/0/2/130270761/f85a09cff91878.pdf
    • http://avispire.co.uk/uploads/1/3/0/5/130539129/d8704b.pdf
    • http://theelfbox.com/uploads/1/3/0/4/130483394/130483394.html#english+alphabet+pronunciation+audio+free

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000118f.bin
27fee5b76aba1fc675b7b32298fe8c6488fa7633426acbda735d231c0312e04a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118F 8856 bytes
font_01_sfnt_off0000531f.bin
62b304d5fc4d8aeee1d995a37070a9071c37e7696c6a49914d1d20d03dff794a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x531F 17688 bytes

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