Malicious PDF — malware analysis report

Static analysis result for SHA-256 70c53b9d5b24564b…

MALICIOUS

PDF

46.3 KB Authoring application: Pdftk
MD5: 5dd0e675569713d0b4e3c14308162d96 SHA-1: 1ee81473b008fde45c3fd343affe2e7a023f90f3 SHA-256: 70c53b9d5b24564b28dd5a0ca1c45490f6643506b8c1dd07203046c918c6339f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. While no scripts were explicitly extracted, the presence of numerous external links points to a mechanism for downloading and executing further payloads.

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://mountainreveriemassage.com/uploads/1/3/0/4/130483759/0430f4d6a55edaa.pdf
    • http://vokam.dressuwell.ru/uploads/2020/01/28/molutila_pigebemeja_ziramade_sitijuga.pdf
    • http://npep.com/uploads/1/3/0/2/130289563/zeragusanifubanijofu.pdf
    • http://simuwojo.kanapes.net/uploads/2020/01/28/2f520.pdf
    • https://juzuladi.weebly.com/uploads/1/3/0/5/130543064/pepisivaxotipuw.pdf
    • http://mrowkaszprotawa.pl/uploads/1/3/0/6/130620672/rasolupo.pdf
    • http://nafabub.rosmedi.ru/uploads/2020/01/28/gewexojom_gevegi.pdf
    • http://mrreynoldsmathclass.com/uploads/1/3/0/5/130589276/5734924.pdf
    • http://snli.co/uploads/1/3/0/4/130475965/6485791.pdf
    • http://wudiz.kuhni-msc08.icu/uploads/2020/01/27/tonuvanalixin-fewulomumujow-vapit-jokebobibatumik.pdf
    • http://altoedc.com/uploads/1/3/0/5/130588633/7497480.pdf
    • http://expressprinting915.com/uploads/1/3/0/6/130639331/4d914216ddc.pdf
    • http://xefa.bazarym.com/uploads/2020/01/28/8606142.pdf
    • http://foundedontruth.com/uploads/1/3/0/2/130288379/2519101.pdf
    • http://wexu.winfilm.ru/uploads/2020/01/27/migalid.pdf
    • http://conexioroma.com/uploads/1/3/0/4/130483345/6378717.pdf
    • http://vyhrajto.com/uploads/2020/01/28/feef5456948e6.pdf
    • http://myskoodles.com/uploads/1/3/0/2/130273913/kiwomaronuzik-tupepirefot-rutidutuxu-vigega.pdf
    • http://kaban.savich.pro/uploads/2020/01/28/tutozenaninutonatut.pdf
    • http://cresaptownsportsmanclub.net/uploads/1/3/0/6/130604675/1697036.pdf
    • https://xepenagazo.weebly.com/uploads/1/3/0/4/130476318/5818957.pdf
    • http://thehnossaproject.com/uploads/1/3/0/4/130436165/130436165.html#acute+periapical+abscess+symptoms

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016a6.bin
113acf8b4b67687c3b5d678a51ef202550929ff93c472ed8fa789fd5ba5db5aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16A6 8728 bytes

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