Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bf1b50d94e583bb…

MALICIOUS

PDF

35.7 KB Authoring application: PDF Studio
MD5: 8cfd5ddf188a3320e6dbd8be7e81328d SHA-1: e2f4f0bfab57550a0931c7b298f6f296d9617b1d SHA-256: 2bf1b50d94e583bb282903a9be0460470ec1d46c84cb4742ab8a1b9168fc4e88
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which is indicative of a link farm or phishing campaign. The ClamAV detection further supports its malicious nature. The embedded URLs are likely used to redirect users to malicious websites or download further malware. The document body itself appears to be a lure, mentioning an 'Employee transfer letter sample' to entice users to click the links.

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://truthbetoldmedia.com/uploads/1/3/0/6/130604558/rexakuwimezo-lorawujibibaf-jozogubi-bonubopimibumi.pdf
    • http://susanpultman.com/uploads/1/3/0/5/130588983/xifoterevixet-piraw.pdf
    • http://framebuyframe.com/uploads/1/3/0/6/130621784/fupomasanosixi.pdf
    • http://oakwoodequestrianfl.com/uploads/1/3/0/2/130291355/5802932.pdf
    • http://monsieurbidule.com/uploads/1/3/0/4/130483253/5877530.pdf
    • http://discoverzoomingroomin.com/uploads/1/3/0/6/130621608/moxeladipulem.pdf
    • http://bedonetmarmaille.com/uploads/1/3/0/6/130639093/6124063.pdf
    • http://letzcook.net/uploads/1/3/0/4/130483354/nejovifi-kufipigegufozit-mufovi.pdf
    • http://petervinthagen.com/uploads/1/3/0/5/130545480/gunetudipiz-noporedato-paxiduguke.pdf
    • http://miriraisithole.com/uploads/1/3/0/6/130604885/8e2bc64373.pdf
    • http://partyplonk.net/uploads/1/3/0/7/130740450/wejilobezi_piboga.pdf
    • http://miam-foundation.com/uploads/1/3/0/7/130776611/76f752528.pdf
    • http://cdmfitness.co.uk/uploads/1/3/0/2/130291803/5db1cb27.pdf
    • http://makethelemonade.com/uploads/1/3/0/7/130776804/8096955.pdf
    • http://orenturner.com/uploads/1/3/0/6/130639593/1161985.pdf
    • http://michaelquesnel.com/uploads/1/3/0/7/130775626/pojeli.pdf
    • http://municipalbondfraud.org/uploads/1/3/0/6/130603785/julozudeza.pdf
    • http://cramerclass.com/uploads/1/3/0/2/130291493/bojikon.pdf
    • http://kingshotelsmunichcitystay.devsite-1.com/uploads/1/3/0/7/130775342/130775342.html#employee+transfer+letter+sample

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f27.bin
3f51eb4b20b61e5816de7f25269c8b468d1a9a349327334d2853fc30e77f1318		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F27 7436 bytes

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