PDF malware analysis — malicious · f85113b4a6c2e549

MALICIOUS

PDF

33.2 KB Created: 2021-07-19 20:27:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: de03d3c3cd54e3f5efba9b5c8f2aadee SHA-1: 2a0827c78b114a3e39df0202e27e17ee68cf2248 SHA-256: f85113b4a6c2e5495fd51728a1f8820e24b18ff0ede2b8f5e6195745f8c9fd56

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one that redirects to known malicious infrastructure. The document body and heuristics indicate a lure for 'free generators' or 'game hacks', a common social engineering tactic. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, and the presence of malicious redirectors suggests an intent to lead the user to a compromised or malicious site, likely for further exploitation or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

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/free-tiktok-accounts-with-followers-game-hack In PDF document text
- https://www.roltechnik.hu/images/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.roltechnik.hu/images/free-likes-on-tiktok_GM835599320.pdfIn PDF document text
- https://www.roltechnik.hu/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.roltechnik.hu/images/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
- https://www.roltechnik.hu/images/how-to-free-robux_GM431946152.pdfIn PDF document text
- https://www.roltechnik.hu/images/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
- https://www.roltechnik.hu/images/minecraft-com-free_GM479516143.pdfIn PDF document text
- https://www.roltechnik.hu/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
- https://www.roltechnik.hu/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- https://www.roltechnik.hu/images/free-robux-with-no-verification_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_off00002c6f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2C6F	22940 bytes
SHA-256: `5e61e3f1387a8e105df2cd7f7041681e9014aaab4958ab71a9efde8262de106f`
`font_01_sfnt_off00006002.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6002	18200 bytes
SHA-256: `00ff3188f7c2cc6f3bb1e48311a72fd536e799d3f1f3caf1b59355958851fd7e`

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