Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d63fb89be76a59a…

MALICIOUS

PDF

79.5 KB Authoring application: Karbon
MD5: 8fe7f344c43890d319803be9b27923b6 SHA-1: ad6bcecebecd8d9be76257a4f2ebbf468dcc3859 SHA-256: 3d63fb89be76a59aaa8e76d33859fd1ad849d01314917423c3a014c78717ce87
128 Risk Score

Malware Insights

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

The PDF contains a link farm with multiple embedded URLs, indicating a phishing or social engineering attempt to direct users to download further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly supports this phishing classification. The presence of a visual download button further reinforces the lure.

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://sylvainetlesfilles.com/uploads/1/3/0/5/130540645/2719050.pdf
    • http://mrkellysupholstery.com/uploads/1/3/0/5/130590538/eda5f28d6.pdf
    • http://bartolomeilaw.com/uploads/1/3/0/6/130604141/dirizukukite_ruvofuzerejo_zexoku_gujixop.pdf
    • http://nohokaiproductions.com/uploads/1/3/0/4/130489448/muwiwawisi_tozevibafa_rojefajaw_gipudepiridom.pdf
    • http://pchstv.org/uploads/1/3/0/4/130436202/pufojawamo-diruwitakusifo-nidonarivigox-xunelen.pdf
    • http://nuobeijinghotel-chinese.devsite-1.com/uploads/1/3/0/4/130435583/130435583.html#yayati+kadambari+pdf+marathi

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012bd.bin
525cde91e9d0706d4cae39bdfd0c375218a84c0545eed283420a09cb3e491f56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BD 9004 bytes
font_01_sfnt_off0000b305.bin
1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB305 1388 bytes
font_02_sfnt_off0000b9ed.bin
ca889182d22413b1a5b6446cd5d954c095bfc2c8b2fec1022b19199100617195		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9ED 16028 bytes
font_03_sfnt_off0000d1fb.bin
267eb96e682e0cf7d66085dfe83be936b7684bf331307f030a678a5bb6f4bd27		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1FB 19896 bytes

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