Malicious PDF — malware analysis report

Static analysis result for SHA-256 b32d92887c9c604e…

MALICIOUS

PDF

59.2 KB Created: 2021-09-22 20:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 58fe05801f324a18676dc274dff8b5f0 SHA-1: abb940fbc6edf08034de336e5b6ea5515c104ccb SHA-256: b32d92887c9c604ec23d180b4313e96b34f6afc48fd6effdb01f38a8717192ed
124 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It functions as a link farm with numerous embedded URLs, suggesting it's designed to lure users to potentially malicious sites. The presence of 'tv+buddy+scam' in one URL further supports a scam-related attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7008

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://anduong-nhatthanh.com/uploads/news_file/43471256933.pdf
    • http://wx-test.com/upload/ckimg/files/202109190514531625.pdf
    • http://xn----9sbkvfu2aex3d.xn--p1ai/ckfinder/userfiles/files/begozatetusoxarox.pdf
    • http://phayaotechno.com/UserFiles/File/lonikoxulu.pdf
    • https://snapstudios.ca/userfiles/file/konutomepuge.pdf
    • https://ourcampuswindow.com/ckfinder/userfiles/files/54251308185.pdf
    • https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/roxofutubebozifej.pdf
    • http://one9five.com/userfiles/files/gosimisomuf.pdf
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/5euubdifh5pg0mcdfj9et90t5e/95488081247.pdf
    • http://aitrans.org/UploadFile/file/F1202109190456335259.pdf
    • http://bradzo-ep.com/uploads/files/52451578930.pdf
    • http://kryotherapie.net/neu/userfiles/file/mapuposepujoguzutetuvegi.pdf
    • http://hcbarrett.com/user_area/file/91450627236.pdf
    • https://naucharts.com/ckfinder/userfiles/files/najegomuvikulitale.pdf
    • http://tysons-cafe.com/uploads/files/janaxi.pdf
    • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/c8788b2f03acd0dd55dbf92d2ccea798/lemapinomemupujexedi.pdf
    • https://cortopolis.ar/userfiles/file/74260113075.pdf
    • https://niboparis.com/upload/fckeditor/file/1630670297_1.pdf
    • http://tvkinter.com/file_media/file_image/file/pinevokawirikewalovo.pdf
    • http://mis.nrru.ac.th/gradjournal/ckfinder/userfiles/files/28432238296.pdf
    • http://infinity8talents.com/userfiles/file/tuwaroluvogisemebofubevif.pdf
    • http://faisaltowel.com/survey/userfiles/files/gapirijarugabusumetodude.pdf
    • http://aftp.bg/userfiles/file/lenuzunemifidip.pdf
    • https://leresto-niort.fr/images/userfiles/files/75918009979.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=tv+buddy+scam
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba18.bin
2be8113cc892becb5d42e6c3ffea4f478daee6785f9b077caf43139c49215787
pdf-font-stream PDF embedded font (sfnt) at offset 0xBA18 10224 bytes