PDF malware analysis — malicious · 4243f975b54ba888

MALICIOUS

PDF

47.7 KB Created: 2021-06-01 01:31:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 99ca96fb8530b52a739b2ffdd48fe249 SHA-1: 5320d80c2b162d242111514f836c00103cc75a6d SHA-256: 4243f975b54ba888ae8c8dbcc2e40c19e11c95b88f96a7ae13dc697873ee0380

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free generators. The embedded URLs, such as 'https://netcdn.xyz/app/431946152/hack-that-joins-any-person-roblox-game-hack', are designed to lead users to potentially harmful content. Although no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious intent to redirect users to malicious websites, likely as part of a phishing or malware distribution scheme.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

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/431946152/hack-that-joins-any-person-roblox-game-hack In PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/free-likes-for-tiktok_GM835599320.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/how-to-make-roblox-audio-for-free_GM431946152.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/super-nice-mml-hack-roblox_GM431946152.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/download-hack-roblox-cb-ro_GM431946152.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/project-alpha-roblox-hack_GM431946152.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/freer-pro-tiktok_GM835599320.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005239.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5239	24876 bytes
SHA-256: `56d9b96feb90c71d5d6c6a1ac0974f3a1f575b038e23a194c556189d3c69e9a8`
`font_01_sfnt_off00008bbd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BBD	2844 bytes
SHA-256: `a66b570a908761b39e6d9e18bcb667c353840a86c6a7db528f79d01abe6b23a1`
`font_02_sfnt_off00009564.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9564	19072 bytes
SHA-256: `63327a29372b5494fab25e1365992ab4593134c8da72d5f215c52fcb2bf267e0`

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