Malicious PDF — malware analysis report

Static analysis result for SHA-256 4110cd0df764ebd6…

MALICIOUS

PDF

40.4 KB Authoring application: Pdftk
MD5: 0342fa7d1689db6f4df7db00326e6c77 SHA-1: 385d12655b6126122b7bf73c10e829ec08c02b04 SHA-256: 4110cd0df764ebd6a70423276341c8b1c8b76bbbe3aebad740f25a8da1516c85
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various external domains. This suggests the primary purpose is to redirect users to a network of sites, likely for SEO manipulation or to host malicious content. The ClamAV detection and ML classifier further support its malicious nature.

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://jeffreysfoundation.net/uploads/1/3/0/6/130620202/6176871.pdf
    • http://elccauction.com/uploads/1/3/0/6/130639888/4877977.pdf
    • http://mommyandbeeboutique.com/uploads/1/3/0/5/130590305/zatudezefegotedoru.pdf
    • http://wiwobinaz.biznescap.ru/uploads/2020/01/28/vaxawurizo.pdf
    • http://screenlo.com/uploads/1/3/0/6/130604903/1d02a.pdf
    • http://nutritionwithnoelle.com/uploads/1/3/0/6/130620803/nuxafaxizonized_rexobetolub_wurepisemopug.pdf
    • https://vobexifoj.weebly.com/uploads/1/3/0/4/130489351/gabipaforetako-jezuxaminuzag.pdf
    • http://mymeds.info/uploads/1/3/0/5/130590724/lapexuwawena-vawurev.pdf
    • http://bellasafety.com/uploads/1/3/0/3/130323928/sunariramom.pdf
    • http://mr-organics.eu/uploads/1/3/0/4/130436096/4147671.pdf
    • http://ninjatechnologies.com/uploads/1/3/0/5/130543476/6640684.pdf
    • http://mybest30minutes.com/uploads/1/3/0/6/130620669/7508587.pdf
    • http://mondayswithmike.com/uploads/1/3/0/3/130379331/de17643c6f293a9.pdf
    • http://dakotaashleymarie.com/uploads/1/3/0/6/130604653/809387.pdf
    • http://virepovet.gepurtrend.com/uploads/2020/01/28/fobipom.pdf
    • http://northernsound.com/uploads/1/3/0/5/130539329/8095784.pdf
    • http://nanacarrie.com/uploads/1/3/0/3/130323647/4134018.pdf
    • http://porschasdivinediamonds.com/uploads/1/3/0/5/130539297/fakuguju.pdf
    • http://encanaplanophotos.com/uploads/1/3/0/5/130550732/kixusamoz_fosisupovixo.pdf
    • http://dandglettings.com/uploads/1/3/0/2/130273987/didusapu-fofinoxap.pdf
    • http://mojonz.co.nz/uploads/1/3/0/6/130604633/fojabusupu-sitox.pdf
    • http://tcsonline.net/uploads/1/3/0/6/130604788/130604788.html#abecedario+para+imprimir+y+recortar+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000039ab.bin
521aa13841b9633de7fcf0b2e525a787fc7cf5ca21afcf907f1c80cf24e084e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x39AB 9916 bytes

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