Malicious PDF — malware analysis report

Static analysis result for SHA-256 614ec4d8b6a929f9…

MALICIOUS

PDF

42.5 KB Authoring application: pdf-parser
MD5: fa355fe7a1f2374842acb26e652af64e SHA-1: 59c4e5113657ae96d4b2fbac42dc677dc623a6d4 SHA-256: 614ec4d8b6a929f95af5e52bd6690357f4b4e22c367569db7bd09d019b87886e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, indicating a link farm or redirection strategy. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to direct users to malicious content.

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 http://messybeards.com/uploads/1/3/0/5/130544190/275688.pdf
    • http://nasdwkas.icu/uploads/2020/01/28/8882105.pdf
    • http://zenergieconseil.com/uploads/1/3/0/5/130551491/0737aafa.pdf
    • http://middletnapic.org/uploads/1/3/0/6/130622111/a4be53fb.pdf
    • http://mobilespeechplus.com/uploads/1/3/0/2/130272477/dijawowulikano-dasexinefa-bivot-pinafa.pdf
    • http://eclipse-weddingcars.co.uk/uploads/1/3/0/5/130551325/dc9649c44513f.pdf
    • http://bcreo.com/uploads/1/3/0/2/130289166/kexuwekosusesidak.pdf
    • http://twinflameoracleshamanhealing.com/uploads/1/3/0/4/130477245/4218405.pdf
    • http://mysocialcrowd.co.uk/uploads/1/3/0/2/130271060/f8c26.pdf
    • http://adimef.com/uploads/1/3/0/6/130604515/sipimu-danomedoku-fafabaxikifobuv-bibinef.pdf
    • http://moulinsdecharlie.com/uploads/1/3/0/6/130605077/tovafabibutasixobu.pdf
    • http://foothillsbiblefellowship.com/uploads/1/3/0/5/130551364/130551364.html#skim+mariko+tamaki+free+download
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000130a.bin
b877ec8216d16573d248a550ee52ba7726e08803f144dd28756e95a8cf4257e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130A 8680 bytes
font_01_sfnt_off00005e1a.bin
a88a3252a732d83265545c0d7bca880eac5c53956b7c2c19aa40bc62a0bd5b2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1A 16492 bytes

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