PDF malware analysis — malicious · 5178cfc6e779fdab

MALICIOUS

PDF

32.2 KB Created: 2021-07-19 23:10:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 79bc5bca972a3f3c972984feff5a4c6f SHA-1: 549a160117e86cb688981a1498b785819871c177 SHA-256: 5178cfc6e779fdab68b5ef03a3ad4696a3bb186de51b6e36fec99a3d94518f55

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically promoting "free generator / game hack" lures. The document body text and embedded URLs reinforce this theme, aiming to trick users into clicking through to potentially malicious sites. No scripts were extracted, but the primary attack vector appears to be social engineering via a lure document leading to a redirector.

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/479516143/how-to-get-minecraft-dungeons-for-free-game-hack In PDF document text
- https://esl.ipb.ac.id/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- https://esl.ipb.ac.id/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
- https://esl.ipb.ac.id/images/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
- https://esl.ipb.ac.id/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
- https://esl.ipb.ac.id/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
- https://esl.ipb.ac.id/images/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
- https://esl.ipb.ac.id/images/bux-life-free-robux_GM431946152.pdfIn PDF document text
- https://esl.ipb.ac.id/images/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
- https://esl.ipb.ac.id/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
- https://esl.ipb.ac.id/images/coin-master-free-spins-link_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_off00002a97.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2A97	22512 bytes
SHA-256: `617bfbd0addcf579c9ba33f6ac701a8701d098c810c962720939d66ce5a1af0b`
`font_01_sfnt_off00005b28.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B28	18472 bytes
SHA-256: `65ee82f26cafa7906902f4dbf8f4098f0781a130d3f16ad2d63d9ccc83542dd0`

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