Malicious PDF — malware analysis report

Static analysis result for SHA-256 65633de5236b8cb6…

MALICIOUS

PDF

43.8 KB Created: 2021-04-07 21:51:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 39c9b0268f93873372cdc5fe5425f5cd SHA-1: 8cd1729d3f62fc11fb8f51b2b0dc6336dcbe3105 SHA-256: 65633de5236b8cb6a51e4f64b69e7a4a2d705d2397bae5849ebc7fd73a166a91
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple heuristics indicating it is a lure for game hacks, specifically targeting Roblox. It embeds numerous URLs that redirect to pages promising free Robux or game cheats. The ML classifier strongly flags this PDF as malicious, and the presence of external URI links suggests an attempt to lead the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gaminggenerator.org/app/431946152/roblox-robux-and-tix-generator-free-download-game-hack PDF link annotation
    • http://biotronics.com.cy/images/roblox-link-hack.pdfIn PDF document text
    • http://bolandergroup.com/images/10-euro-roblox-karte-free.pdfIn PDF document text
    • http://ktn.com.br/images/how-to-get-free-robux-unauthorized-paymen.pdfIn PDF document text
    • http://www.inservis.cl/images/how-to-hack-robux-into-your-user.pdfIn PDF document text
    • https://www.roltechnik.hu/images/i-was-hack-on-roblox-no-download.pdfIn PDF document text
    • http://medicalafrica.net/images/roblox-free-items-generator-hack.pdfIn PDF document text
    • http://vagency.us/images/roblox-robux-hack-generator.pdfIn PDF document text
    • http://alexandrion.com/images/cheat-code-roblox-superhero-tycoon.pdfIn PDF document text
    • http://naturschutzgossau-zh.ch/images/how-to-get-bloxburg-for-free-roblox.pdfIn PDF document text
    • https://digitalsenseafrica.com.ng/images/se-pueden-hackear-las-cuentas-de-roblox.pdfIn PDF document text
    • http://sscclc.edu.ec/images/free-running-parkour-roblox.pdfIn PDF document text
    • http://clubpure.org/images/como-descargar-hacks-para-atravesar-paredes-en-roblox.pdfIn PDF document text
    • https://icefuture.ru/images/roblox-account-stealing-hack-by-kingtennisbal-deutsch.pdfIn PDF document text
    • http://e-mailservis.cz/images/free-robux-generator-no-human-verification-100.pdfIn PDF document text
    • http://garrisonjazz.com/images/roblox-veil-free.pdfIn PDF document text
    • http://agriconservizi.com/images/best-game-to-hack-on-in-roblox.pdfIn PDF document text
    • http://beagles-of-harmony.de/images/trigon-cheat-roblox.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-hack-in-roblox-accounts.pdfIn PDF document text
    • http://pa-kabmadiun.go.id/images/how-to-get-free-robux-2021-august.pdfIn PDF document text
    • http://abst-brandschutztechnik.com/images/ez-hacker-roblox.pdfIn PDF document text
    • https://digitalsenseafrica.com.ng/images/se-pueden-hackear-las-In PDF document text
    • http://clubpure.org/images/como-descargar-hacks-para-In PDF document text
    • http://pa-kabmadiun.go.id/images/how-to-get-free-robux-2021-In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e6a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E6A 25836 bytes
SHA-256: 13ba3d5af1c3b66c27de8a9300f91fea925e65c207881a5e5c7975d667aaf34d
font_01_sfnt_off00008846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8846 18440 bytes
SHA-256: c9950c42b068099fa49b13589b8974feac5f2171e358f7475f5e4a785c8f718e

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