PDF malware analysis — malicious · 8efd923d16f7f2aa

MALICIOUS

PDF

45.5 KB Created: 2021-06-11 07:26:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 42495eebb27cca46efd383b739dadcfe SHA-1: 17c1e1daafefaeda05e74814a6e1ad6adb861a89 SHA-256: 8efd923d16f7f2aa673e90c4d570f2cb6f1de8994883a8da38d6fe0064a32cc5

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9797

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 https://netcdn.tw/app/835599320/tiktok-for-free-game-hack PDF link annotation
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-tamil-songs-music-codes-for-roblox_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-robux-hack-generator-no-download_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/cartoon-roblox-character-free_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/hacker-roblox-fr_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/hack-per-roblox-2021_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-speed-hack-2021_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-100-legit_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-roblox-gift-card-codes-unused-2021_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-catalog-slendytubby-clothes-free_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-robux-hack-on-phone_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-mac-hacks-2021_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-roblox-plane-models_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-by-watching-videos_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005060.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5060	24152 bytes
SHA-256: `01f7b115c2fa186e84c4b76054f720ffa560d9eda8a5923c0b39e428974ee6c8`
`font_01_sfnt_off000087a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87A7	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00009192.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9192	17456 bytes
SHA-256: `59b82efa7141ba2b07d91e3b641cbf682cee4575ed292f5ecf89ba3b7e2e2e13`

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