PDF malware analysis — malicious · ad6b495715252a8e

MALICIOUS

PDF

33.9 KB Created: 2021-06-30 04:45:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12

MD5: 24ca3a81a1921893ff9556a233bf4ff0 SHA-1: 6376bd2bc178e7d73009d7dac0d7b52125eb03cc SHA-256: ad6b495715252a8e1793b443786fa659c4426cb01f188c728d0e57847acaf0e9

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a known malicious redirector, masquerading as a game hack or generator. The document body and heuristics indicate a lure for free game currency, specifically targeting users interested in games like Roblox. The primary malicious action observed is directing the user to a malicious URL, likely to download further malware or engage in phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9824

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/431946152/how-to-get-free-robux-by-playing-meep-city-game-hack In PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/earn-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-cs-hack_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-vip-roblox_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/dead-winter-roblox-credits-hack_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-followers-on-roblox-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/ultimate-hack-for-roblox-unpatchable-level-7_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-cheat-in-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/best-free-roblox-explits_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-online-roblox-tornado-games_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/scam-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-fly-in-roblox-without-hacks_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/como-instalar-hacks-en-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/the-final-stand-2-roblox-cheat_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/are-there-any-actual-robux-cheats-reddit_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/minecraft-account-hacked_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_off00002d2c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D2C	21964 bytes
SHA-256: `733355888ceb6f8d978234033ab09415c6859278d3117d35e4b8546e496e5e1f`
`font_01_sfnt_off00005d91.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D91	19884 bytes
SHA-256: `339e01d44f969ad91ebadce20ef2a4d8a0e999eeb9e55172507794ea18309d61`

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