PDF malware analysis — malicious · 44fe033983538b81

MALICIOUS

PDF

35.7 KB Created: 2021-06-20 17:21:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 569c127dd0ff221093b96af9ff9707a2 SHA-1: 34d44bfa0c36b7032fa439bd49275fc4c593f5b7 SHA-256: 44fe033983538b812c6538facdc4df75938436989b3fd65f76b4549080ed5c11

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free in-game currency. The primary URL, http://netcdn.co/app/431946152/how-to-hack-dungeon-quest-using-dark-dex-roblox-game-hack, is identified as a malicious redirector. The document body and embedded URLs strongly suggest a phishing or scam campaign aimed at tricking users into visiting potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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://netcdn.co/app/431946152/how-to-hack-dungeon-quest-using-dark-dex-roblox-game-hack In PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/free-robux-hack-no-survey-com_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/free-robux-without-human-verification-and-survey-2021_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/master-game_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/coin-master-apk-mod_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/roblox-dll-hack-52021_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/hacked-roblox-face-id_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/egg-farm-simulator-roblox-hack_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://balibalotour.com/new/public/ckfinder/userfiles/files/roblox-hack-noclip_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off000031bb.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x31BB	22852 bytes
SHA-256: `e91df7bae37a9bebf5d9b05cb90e4f921dee5d6207251f46c9b2d7dbbe2673e3`
`font_01_sfnt_off00006506.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6506	19512 bytes
SHA-256: `71ae871d8719bfce2dd731a1976c665399d7f0ec770ba60d82db36bbfb5f971c`

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