PDF malware analysis — malicious · d3e865b04d39ea43

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 15:22:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: e56ece6c6c51936a28016eb2f98d5c93 SHA-1: add93f8a0e4fe6636fe3994b1a8d6bdc36d09b19 SHA-256: d3e865b04d39ea43cd1d7e316c6839209b9afd2e735c0967a9832f583fd668b5

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary redirector URL is http://netcdn.tw/app/431946152/roblox-help-free-robux-game-hack. The document body and heuristics indicate a social engineering tactic to trick users into visiting these sites, likely for further malware delivery or credential harvesting.

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-help-free-robux-game-hack In PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/dragon-egg-backpack-roblox-free_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/free-halloween-costumes-for-roblox_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/todos-los-hacks-de-roblox_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/reach-hacks-roblox_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/at-which-game-have-free-robux-at-roblox_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/tiktok-free-liker_GM835599320.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-hack-programers_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/free-robux-and-builders-club-hack_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/free-vip-server-for-roblox-gravity-shift_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/roblox-hack-pro-gamers-com_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/free-robux-generator-2021_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_off00003116.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3116	22232 bytes
SHA-256: `119874b3ec77be94309e3cef9dd153ce2c987a51d75d6e737353dde3b817622c`
`font_01_sfnt_off00006261.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6261	18968 bytes
SHA-256: `e6d3133e218776b7d87035f377c26f4245cc7a54287827524eb781a63c565006`

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