PDF malware analysis — malicious · 421db97df3bd6dd1

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 08:23:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: d9505634be8ede39c8791fda679c0add SHA-1: 2f6e0733558356cb4cf407c3c55d01014fea059a SHA-256: 421db97df3bd6dd151f24c410cb2a40d2672f778396b7198cc621c8781e3abbb

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that claim to offer game hacks and cheats, such as 'roblox-fly-hack-game-hack'. These links are identified as malicious redirectors, indicating a high likelihood of malware distribution or phishing. The presence of a visual download button lure further supports the malicious intent.

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.tw/app/431946152/roblox-fly-hack-game-hack In PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-have-a-coo-roblox-avatar-for-free_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/cute-free-hairs-for-girls-in-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/client-hack-roblox-2021-download_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-money-links-coin-master_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-do-you-hack-a-roblox-server_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-clothes-from-other-users-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/win-robux-for-free_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-model-game-system-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-free-robux-no-inspecting_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-retail-tycoon-hack_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-no-hack_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-how-to-change-your-name-for-free-2021_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/live-roblox-bubble-gum-simulator-hack_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
`font_00_sfnt_off000031c0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31C0	22924 bytes
SHA-256: `651a9ab394bbd083e30da6501d1ce6b2cbf9920327e44d3d2dfb9d47b608205d`
`font_01_sfnt_off00006553.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6553	19000 bytes
SHA-256: `85597ddf86b547b1587e1575dd14eab6ad0408ff1d5dd1947e703cb703eeca41`

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