Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4defb9d8a808d5…

MALICIOUS

PDF

47.4 KB Authoring application: Karbon
MD5: 36db528b8f5216bc53810ad68355f376 SHA-1: 12a319135b0b593160d545391af3a11de134403f SHA-256: 2b4defb9d8a808d568286738cd03d96356c082d49533c47149d32f56c5f29861
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by ClamAV as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and a machine learning classifier with high confidence. The critical heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, with 'papa.mojenmoney.xyz' being a dominant host. These links likely lead to phishing pages or further malware distribution. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://papa.mojenmoney.xyz/uploads/2020/01/28/7177464.pdf
    • http://bunnystravel.world/uploads/1/3/0/5/130588659/jimajedidawi-foxirexivem.pdf
    • http://mplusjclothing.org/uploads/1/3/0/5/130551089/dagubasagutafu_rujuvagonijini_xewapoj_gekiwoguba.pdf
    • https://dexuvowuk.weebly.com/uploads/1/3/0/2/130270867/wisaz_feloriravize_boriwebetagowus_subop.pdf
    • http://disdiy.com/uploads/1/3/0/5/130588635/xajinafuguvapo_xurokuroveraj.pdf
    • http://minecraftray.site/uploads/1/3/0/3/130313426/malabodalabajep_xudovujale.pdf
    • http://sunfanglu.com/uploads/1/3/0/5/130588336/litija_xiguw_sotopimukepox.pdf
    • http://arcadiagardensllclandscapinganddesign.com/uploads/1/3/0/5/130545895/130545895.html#glacial+acrylic+acid+cas

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001293.bin
5000c22d2f83884f2f975068bbdc28003431a645c13ac204cc7d0922383e1f28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1293 9964 bytes
font_01_sfnt_off00006a88.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A88 2652 bytes
font_02_sfnt_off00007356.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7356 16036 bytes

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