Malicious PDF — malware analysis report

Static analysis result for SHA-256 d46e9e1fe9b5552c…

MALICIOUS

PDF

70.3 KB Created: 2021-09-17 05:15:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 20906f4f9d647cae00a1bfceea4beb71 SHA-1: c4c50816d6c1a989216168903ecaeac44700d544 SHA-256: d46e9e1fe9b5552cdd20fac8037a54feea619ee05b931b3ca28ceea25acd7838
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, suggesting it attempts to redirect users to potentially harmful websites. The PDF's structure and the presence of JavaScript point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7921

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 https://stcc-sa.com/motakamel/Ups/files/debonagiwetamufe.pdf
    • http://gamjagolla.com/uploads/files/viserazisagarozeb.pdf
    • http://kbinteriery.cz/userfiles/file/titemirepewarelu.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/5169972f547f251172d2e63e4dc9699c/nezepuvotipufojed.pdf
    • https://pharma-tools.eu/galeria/file/roluf.pdf
    • http://sunnyten.net/userData/board/file/ridefajinidun.pdf
    • http://anchor-m.com/js/upload/files/68135765485.pdf
    • http://ukrainski-rosyjski.pl/userfiles/file/35435988558.pdf
    • https://photofetimages.com/posezirulipotebadelepax.pdf
    • http://jonme.net/ckupload/files/11534056404.pdf
    • https://tidurmalam2.com/contents/files/74292887105.pdf
    • http://cybernet-ap.com/UserFiles/File/motolevozukoni.pdf
    • http://gildiamasterov.ru/userfiles/file/46246036207.pdf
    • http://gamebonda.com/ckupload/files/kagepufubozud.pdf
    • https://agroadvanced.com/app/webroot/newsletters/editor/files/6100154306.pdf
    • http://studioassociatoemc.com/userfiles/files/doloku.pdf
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/2f617cc301766f4c5c37367791077ab1/57000862432.pdf
    • http://cdenito.net/userfiles/file/wonototele.pdf
    • https://vietnaminsight.biz/ckfinder/userfiles/files/84237945619.pdf
    • http://dgjst.com/upfile/file/14217621297.pdf
    • https://goez1.com/10005001208290177/ckfinder/userfiles/files/6280860281.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=video+live+wallpaper+app+download
    • 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_off0000dec0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC0 16792 bytes