PDF malware analysis — malicious · 85b928f6156fc289

MALICIOUS

PDF

33.7 KB Created: 2021-06-25 06:30:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: d3f82f3580e0d0d77707fe2e003fcd82 SHA-1: bb1d9bd106728905a1c3c06beb5d4acd54ce4379 SHA-256: 85b928f6156fc289605c677cfffcf07091d79a27bbf0bf9bb0d1166a98e61819

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a high-confidence heuristic firing for a game hack redirector lure. The document body explicitly mentions 'Get Any Item In The Roblox Catalog For Free' and links to various game-related hack sites. This indicates a phishing or scam attempt designed to trick users into visiting malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector high 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.
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
External URI info PDF_URI

PDF contains an external URL action
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/get-any-item-in-the-roblox-catalog-for-free-game-hack PDF link annotation
- http://www.duchem.ae/uploaded_files/userfiles/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-play-roblox-on-macbook-pro-itunes-for-free_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/robux-only_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/exploit-hack-roblox-august_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-official-page_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/get-me-robux-for-free_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_off00002f40.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F40	21328 bytes
SHA-256: `cdba7742a67d83d123f195e31543febfde69f8995dc3a1d7104ec6cf51b54291`
`font_01_sfnt_off00005dc5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DC5	19360 bytes
SHA-256: `597f4c87919f4f366629e6713edb70805104b5012c97d9033a14977bf1e6bd3f`

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