Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4bfdf135e144791…

MALICIOUS

PDF

28.3 KB Authoring application: GIMP
MD5: e734ad00f1c449fca9ff68604367e164 SHA-1: fe23657b37157c5a938c38432a52b602f1aca015 SHA-256: e4bfdf135e144791b2e854fa162abbe43382f81de7713768f6dd0c1d8a55dd70
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique commonly used for SEO poisoning and phishing. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The document body, while containing some obfuscated text, also explicitly lists numerous URLs pointing to PDF files, reinforcing the phishing and malicious download lure.

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://mj2startups.com/uploads/1/3/0/4/130476069/13fd959da24be.pdf
    • http://oilsfortriathletes.com/uploads/1/3/0/6/130639212/fufimiwelonajew_rofibafexe_wexanapisavonir.pdf
    • http://inqeparo.com/uploads/1/3/0/7/130738814/9978409.pdf
    • http://iamdtf.net/uploads/1/3/0/6/130621893/c8940e491.pdf
    • http://nexuschapel.org/uploads/1/3/0/5/130588216/770dde0e.pdf
    • http://bethcyrusmusic.com/uploads/1/3/0/2/130289282/luwunejikorobaluvob.pdf
    • http://ngikngok.com/uploads/1/3/0/4/130488451/8592214.pdf
    • http://embracingfaithministries.com/uploads/1/3/0/2/130271126/bowaxo-mufed.pdf
    • http://exhibition-board-hire.com/uploads/1/3/0/7/130739505/runisug.pdf
    • http://bigben.site/uploads/1/3/0/2/130291371/powopidazurelilad.pdf
    • http://graceischange.com/uploads/1/3/0/7/130775292/dawivapuv.pdf
    • http://robinjoyphotography.net/uploads/1/3/0/6/130639537/4720067.pdf
    • http://therebuildcovenant.org/uploads/1/3/0/2/130287441/fidumedet-nonunuto.pdf
    • http://simd.at/uploads/1/3/0/5/130589135/9619768.pdf
    • http://chichesterfootandankle.org/uploads/1/3/0/5/130550992/130550992.html#approaches+and+methods+in+language+teaching+3rd+edition+pdf+free+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001773.bin
c8308149f4a52b9d6eba89ddbe27084f55b5044f3695be66dbb9776734200aa1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1773 6732 bytes

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