Malicious PDF — malware analysis report

Static analysis result for SHA-256 f772bd13cfe96e20…

MALICIOUS

PDF

44.6 KB Authoring application: GIMP
MD5: e3dd1d981f544075664d29c1ee71c420 SHA-1: af490fe5ce00c7ac9bdfc132c451704c4842dc2d SHA-256: f772bd13cfe96e207af5ba0fabbf90a0f903c6eb02d91815dcbebb8dff04cbe3
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of a link farm, with the dominant host being doodlepadart.com. No scripts were extracted from this sample.

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://doodlepadart.com/uploads/1/3/0/4/130436306/pozovefolavaxuxuderu.pdf
    • http://neighbors4christ.org/uploads/1/3/0/7/130738503/1d365.pdf
    • http://rowancannell.com/uploads/1/3/0/5/130540507/1147710.pdf
    • http://bibliografiatotonaca.com/uploads/1/3/0/7/130740502/5826409.pdf
    • http://art-by-the-yard.com/uploads/1/3/0/2/130287495/geleverulov-luxabedetilexib-zapewat.pdf
    • http://thegoodloanbroker.com/uploads/1/3/0/7/130738531/4f6e151802844af.pdf
    • http://visitcaddogap.org/uploads/1/3/0/6/130604804/siguripuw.pdf
    • http://signaturegroupne.co.uk/uploads/1/3/0/4/130435555/5595552.pdf
    • http://www.sifassg.com/uploads/1/3/0/7/130739200/senidonejam.pdf
    • http://maritimeadvisory.com/uploads/1/3/0/5/130543310/pavugabijimov_tezozemedopix_jujutibumozawa_bonaxujuseguzub.pdf
    • http://ineavet.com/uploads/1/3/0/6/130639412/gidem.pdf
    • http://234360060668842261.com/uploads/1/3/0/7/130739022/1993898.pdf
    • http://www.xoperations.us/uploads/1/3/0/6/130621276/059c2297d2.pdf
    • http://standforking.com/uploads/1/3/0/6/130639027/5765721.pdf
    • http://warsfitness.com/uploads/1/3/0/7/130775918/lipax.pdf
    • http://meredithmorrisisawesome.com/uploads/1/3/0/5/130543979/1715254.pdf
    • http://constellationentertainment.com/uploads/1/3/0/6/130620565/nuzufomebidukaw_bomurawufiduva_kurisujal_teputus.pdf
    • http://keoconsult.com/uploads/1/3/0/3/130379367/purabenixadizox.pdf
    • http://www.iotaphilambdanorfolk.gammaxiques.org/uploads/1/3/0/9/130969922/130969922.html#sindrome+de+transfusion+feto+fetal+fisiopatologia
    • http://maritimeadvisory.com/uploads/1/3/0/5/130543310/pavugabijimov_tezo

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003828.bin
f77ae30e2eec2ca3578253c0a086b7b4bc83d4d366503269d9bfd12176ed9dae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3828 16040 bytes
font_01_sfnt_off00004f86.bin
69205b89b246a21fe44ccb2f74cc4630a4c3225fdaa42d13416ba2b8a0b64eaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F86 8832 bytes

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