PDF malware analysis — malicious · 3a820bffe149dacc

MALICIOUS

PDF

36.7 KB Created: 2021-06-29 08:44:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: cd7b0d7fd3950e9cbda78d06a2f5e8f8 SHA-1: 6a0c6b53d7005f07e4a9a46cdf8bb7da430c6039 SHA-256: 3a820bffe149daccdc3c1da58f99debe6491120b5fedfa98372f7418f54fd9ec

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising 'free generators' and 'game hacks'. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links confirms a malicious intent to lure users to potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit user interest in game cheats to deliver a payload or phish for credentials.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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.co/app/479516143/hacker-minecraft-song-game-hack In PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/roblox-free-roam-games-grand-blox_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/free-roblox-card-codes-2021_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/v3rmillion-roblox-account-hack_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/how-to-get-free-items-on-roblox-no-hack_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/best-free-catalog-items-roblox_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/pet-trainer-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/good-hack-scripts-for-roblox_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/how-to-get-free-clothes-on-roblox-no-bc_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/lumber-tycoon-2-cheats-roblox_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/roblox-filter-anti-cheat_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/hacks-for-free-robux-on-roblox-no-human-vertify_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/dinosaur-simulator-in-roblox-hack-glitch-for-dna_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/free-minecraft-svg-cutting-files_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_off00003ab5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3AB5	22888 bytes
SHA-256: `ca25c9c0b27562f5023ed0584f6e204a26458a321d9f81d69a7796a64c7832a2`
`font_01_sfnt_off00006da0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6DA0	18168 bytes
SHA-256: `37e3c409e679a213a10e0592b8ff177cf348fa9834d19b03b17241e7ed0c948b`

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