PDF malware analysis — malicious · afcfc8c167abc309

MALICIOUS

PDF

31.2 KB Created: 2021-07-19 17:46:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: f903c93399972dc19a897465e965121d SHA-1: b786dc7a2a1daff823c6c310365c3b6eff03859d SHA-256: afcfc8c167abc309d396c71db42c75a4703dc10858b1f3017e080cfd6f0d2e92

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and websites offering game hacks, indicating a lure-based attack. The presence of a 'download button' heuristic further supports the intent to trick users into downloading potentially malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a common pattern of using social engineering to drive traffic to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9893

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/431946152/robux-com-free-game-hack In PDF document text
- https://7gking.tw/upload/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- https://7gking.tw/upload/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
- https://7gking.tw/upload/files/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
- https://7gking.tw/upload/files/roblox-hack-client_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
- https://7gking.tw/upload/files/free-tiktok-hearts_GM835599320.pdfIn PDF document text
- https://7gking.tw/upload/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
- https://7gking.tw/upload/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/can-you-get-minecraft-for-free_GM479516143.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_off00002852.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2852	21528 bytes
SHA-256: `ff526831249fb70aaa3f4a1b3acb07c2c77c60ccd7eae070483db2477e21325a`
`font_01_sfnt_off0000572a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x572A	18460 bytes
SHA-256: `4a32e366c4d91d7d134c7dbb73cf2529d0f331c5de2309c0ca0f4850ac867bfa`

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