Malicious PDF — malware analysis report

Static analysis result for SHA-256 8328786ace4bdeaa…

MALICIOUS

PDF

61.0 KB Authoring application: Poppler-utils
MD5: c60c35d93e7d28564bdc7ca4bf1a3400 SHA-1: 3f1c52f980b48457cfaad01f3fc071b823ff4606 SHA-256: 8328786ace4bdeaa0c200cf59916dad1c2869a6aebc00bcafd380886e811d3b0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, limiting the analysis of direct execution vectors.

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://impulsandotusfinanzas.com/uploads/1/3/0/2/130289748/9861272.pdf
    • http://andrewclogg.com/uploads/1/3/0/6/130639839/6398480.pdf
    • http://imyd.com/uploads/1/3/0/5/130588394/779e6ecff1ec.pdf
    • http://victoriajho.com/uploads/1/3/0/5/130539033/9d6ce46f9d064.pdf
    • http://huabba.de/uploads/1/3/0/3/130323235/19205.pdf
    • http://spoonpoint.com/uploads/1/3/0/8/130813945/nevobuveje.pdf
    • http://bestkettlecornever.com/uploads/1/3/0/5/130539354/302ca61b7.pdf
    • http://summerslittlebakery.com/uploads/1/3/0/6/130604295/pexutojojegifi-nedazozaranaj-rogivufoxo-bizipajoba.pdf
    • http://intownmci.com/uploads/1/3/0/4/130489958/jinokuditene.pdf
    • http://middlechildclothing.com/uploads/1/3/0/5/130544635/3b64b8610.pdf
    • http://www.jkgamedev.com/uploads/1/3/0/8/130874300/zirewevobofe.pdf
    • http://damaebanisteria.com/uploads/1/3/0/7/130775858/8653545.pdf
    • http://www.hanaabeautyandnailsshop.com/uploads/1/3/0/4/130476342/soxibarixedusiwa.pdf
    • http://ideasilluminated.com/uploads/1/3/0/5/130551294/f9daf91e791.pdf
    • http://wbagi.com/uploads/1/3/0/4/130483163/jovojomem-kabuxaritewu-vewiviwekofapuz-jexuzuledo.pdf
    • http://vocescuola.org/uploads/1/3/0/5/130539016/7843057.pdf
    • http://nathanbrooker.com.au/uploads/1/3/0/5/130540293/2158475.pdf
    • http://marrsmakers.bitscover.com/uploads/1/3/0/4/130483592/lomimoxu_mizivu_zikerat_xulag.pdf
    • http://ndhumanities.com/uploads/1/3/0/5/130544243/6323204.pdf
    • http://collectionof.org/uploads/1/3/0/4/130435834/logimunesokuxuz.pdf
    • http://wcd-h1qgkfx4.mgh-r.ch/uploads/1/3/0/7/130775284/130775284.html#diet+changes+acid+reflux

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015f5.bin
b064f0028047cdfc7d52b2b308109c0bed6155f844ebdccd0b39024e2afa6053		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15F5 8616 bytes

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