PDF malware analysis — malicious · f94d5ab3a9631ecc

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 08:05:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 7fad74662591dd2d40e660509628ebdf SHA-1: 712335c1fd5a764c830dea25d8c7a070727b66e7 SHA-256: f94d5ab3a9631eccfe1e51fa9d0692b6a73337f24872ed441cfe88629cfbaf82

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristic firings indicate a lure for game-related cheats or generators, aiming to trick users into visiting these malicious URLs. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-apk-free-download-game-hack In PDF document text
- https://www.citrus-shop.cz/images/robloxfun-com-generator_GM431946152.pdfIn PDF document text
- https://www.citrus-shop.cz/images/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.citrus-shop.cz/images/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
- https://www.citrus-shop.cz/images/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
- https://www.citrus-shop.cz/images/robux-sites_GM431946152.pdfIn PDF document text
- https://www.citrus-shop.cz/images/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
- https://www.citrus-shop.cz/images/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
- https://www.citrus-shop.cz/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- https://www.citrus-shop.cz/images/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
- https://www.citrus-shop.cz/images/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
- https://www.citrus-shop.cz/images/how-do-you-get-robux_GM431946152.pdfIn PDF document text
- https://www.citrus-shop.cz/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.citrus-shop.cz/images/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
- https://www.citrus-shop.cz/images/unlimited-robux_GM431946152.pdfIn PDF document text
- https://www.citrus-shop.cz/images/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
- https://www.citrus-shop.cz/images/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
- https://www.citrus-shop.cz/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.citrus-shop.cz/images/roblox-report-hacker_GM431946152.pdfIn PDF document text
- https://www.citrus-shop.cz/images/free-robux-download_GM431946152.pdfIn PDF document text
- https://www.citrus-shop.cz/images/www-roblox-com-free-robux_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
`stream_003_off00004b42.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B42	24832 bytes
SHA-256: `6843b6d891d719ebc03a1068c44941271bc7b9f7bbf1eb8cf598464723c08a64`
`font_01_sfnt_off000082f0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82F0	18636 bytes
SHA-256: `352d929b5f45d1d816cf71c40016a6b8bab10c0c0acb2d1be8608963c5a906f7`

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