PDF malware analysis — malicious · f7bfc0b3257fef43

MALICIOUS

PDF

33.1 KB Created: 2021-07-19 07:14:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 8ce1422922a54e6afa6683984d133352 SHA-1: 7a6a26f178973647bf5f449e996692d1686a633a SHA-256: f7bfc0b3257fef4387026a66c60970744a3abe321ca46a0f049e882275f1bd31

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically advertising free game hacks and currency generators. The heuristic firings confirm these links lead to malicious infrastructure and are designed as a lure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in free items to redirect them to potentially harmful content or further stages of infection.

Machine Learning

Nyx PDF Classifier malicious score 0.9900

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.tw/app/835599320/tiktok-views-free-game-hack In PDF document text
- https://wandpiraten.de/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://wandpiraten.de/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
- https://wandpiraten.de/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
- https://wandpiraten.de/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
- https://wandpiraten.de/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
- https://wandpiraten.de/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://wandpiraten.de/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
- https://wandpiraten.de/images/free-minecraft-worlds_GM479516143.pdfIn PDF document text
- https://wandpiraten.de/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
- https://wandpiraten.de/images/free-robux-without-verification-2021_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
`font_00_sfnt_off00002d2f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D2F	22976 bytes
SHA-256: `9dd7ae456e9eb086792a8f17ee60d092716aecc93b751a067447417ef7cb57ed`
`font_01_sfnt_off000060d7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60D7	17752 bytes
SHA-256: `ed90b125ba9f9ca56523df41571dae51d579609882fb5a6f38a0996a644814a5`

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