PDF malware analysis — malicious · 9928ef4fa4d44dfc

MALICIOUS

PDF

45.0 KB Created: 2021-05-15 04:01:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: bccba2a1cc2a7d2766db54036c28e047 SHA-1: e54fbb72ebec08eaf8e33827b0660f9726b9492b SHA-256: 9928ef4fa4d44dfc49cb38f463b2c8d2685f41221c2eb61431b0bfab4b70aeb3

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links impersonating Facebook and promising free Robux, a common lure for credential phishing or malware distribution. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-without-downloading-apps-game-hack, which is flagged as a malicious redirector. The document's structure and embedded links strongly suggest an attempt to trick users into visiting a malicious site, likely leading to further compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 5

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.
Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/free-robux-without-downloading-apps-game-hack.
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 https://netcdn.xyz/app/431946152/free-robux-without-downloading-apps-game-hack In PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/roblox-sexually_GM431946152.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/minecraft-free-edition_GM479516143.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/how-to-use-wurst_GM479516143.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/coin-master-facebook_GM406889139.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
- http://mobtakerancell.ir/assets/uploads/pages/files/50-000-free-spins-coin-master_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_off00004ac5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4AC5	27232 bytes
SHA-256: `2806fcc983aca999ed8109a69dc625d170625905ae934c9a6b6584d3a97c59fd`
`font_01_sfnt_off000088e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88E1	19876 bytes
SHA-256: `7dd9be13e4665f5a35086e4b23dd28e6d3ecc39135d95cb28b9ae9c86552181a`

Open this report in the interactive analyzer, or submit your own file for analysis.