PDF malware analysis — malicious · ab7bcd12fa05cc09

MALICIOUS

PDF

52.5 KB Created: 2021-05-31 08:46:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 1bd0ecc9ef3a4873b312a1b039476aea SHA-1: 28d77b0b27209938b0bf4b39c3c9da639ba54710 SHA-256: ab7bcd12fa05cc09c651f42404e6dc5c446a759738a37131e01ed35fd7ec7618

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.8250

Heuristics 5

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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.xyz/app/431946152/is-it-illegal-to-hack-on-roblox-game-hack PDF link annotation
- http://airrix.com/wp-content/uploads/fsqm-files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/bux-life-free-robux_GM431946152.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/minecraft-free-app_GM479516143.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/free-roblox-hack_GM431946152.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/free-minecraft-codes_GM479516143.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/minecraft-java-free_GM479516143.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/robux-com-free-robux_GM431946152.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
- http://airrix.com/wp-content/uploads/fsqm-files/minecraft-for-free-on-phone_GM479516143.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
`font_00_sfnt_off00005a94.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A94	30080 bytes
SHA-256: `b3269ec6236884248359f3e9bdf74b2a1ee3212c140a9851a794db0562a0c158`
`font_01_sfnt_off00009f58.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F58	2828 bytes
SHA-256: `db1860fd79a3f2cbe32e2bada3ba4c68a2d581b7a24294387cd777233cc9cef6`
`font_02_sfnt_off0000a90f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA90F	18576 bytes
SHA-256: `a768ca7f7d7c10a04a644029d8df40c9158d9a0d5418d33bd28d42f97ee776bb`

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