PDF malware analysis — malicious · 05c130d260a2c19a

MALICIOUS

PDF

34.8 KB Created: 2021-06-17 22:27:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 8f381e4b2967b3fab8f767af3cf28196 SHA-1: 9fd1d46b556d7bc78721fd7484ee6acf172d8e20 SHA-256: 05c130d260a2c19a7b37487418333360deff999d922e8568baa50d291f253bc5

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of free game hacks and generators to entice users to click on embedded links. The primary link redirects to malicious infrastructure, which in turn hosts multiple other PDF files, suggesting a downloader or redirector chain. The ML classifier strongly indicated maliciousness, and the presence of multiple malicious redirector links reinforces this assessment.

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/free-robux-real-no-human-verification-game-hack In PDF document text
- https://nendientu.com/public/upload/files/free-800-robux_GM431946152.pdfIn PDF document text
- https://nendientu.com/public/upload/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
- https://nendientu.com/public/upload/files/easy-roblox-today_GM431946152.pdfIn PDF document text
- https://nendientu.com/public/upload/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
- https://nendientu.com/public/upload/files/coin-master-spins-hack_GM406889139.pdfIn PDF document text
- https://nendientu.com/public/upload/files/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
- https://nendientu.com/public/upload/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- https://nendientu.com/public/upload/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
- https://nendientu.com/public/upload/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
- https://nendientu.com/public/upload/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
- https://nendientu.com/public/upload/files/free-robux-apk_GM431946152.pdfIn PDF document text
- https://nendientu.com/public/upload/files/roblox-com-hack_GM431946152.pdfIn PDF document text
- https://nendientu.com/public/upload/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://nendientu.com/public/upload/files/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
- https://nendientu.com/public/upload/files/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
- https://nendientu.com/public/upload/files/pokemon-go-free-roam_GM1094591345.pdfIn PDF document text
- https://nendientu.com/public/upload/files/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- https://nendientu.com/public/upload/files/coin-master-pro-hack_GM406889139.pdfIn PDF document text
- https://nendientu.com/public/upload/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://nendientu.com/public/upload/files/coin-master-viking-quest-hack_GM406889139.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
`font_00_sfnt_off00003059.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3059	22628 bytes
SHA-256: `3faea60cd0aba1a7a57a2da6f44934bd7bb9b06d76730209babf8179f87076f5`
`font_01_sfnt_off000062aa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62AA	19224 bytes
SHA-256: `7fc11cae9f15530b13f08fd8d6c8c0e0b13b11262bff7719b1d6cc434e4620a7`

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