Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d4ac016cd0b728c…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 15:52:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 88baa0202d732bb6cf6761a0d116b314 SHA-1: abede1ea74b0ee608e08d99ff99b1a589fa9291e SHA-256: 8d4ac016cd0b728c38dc090d407e8813b514299c8e1ca05eb3a0cb5e613c3777
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for 'free coins and spins' and game hacks, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs suggests an attempt to redirect users to potentially malicious content or downloads. No scripts were extracted, but the overall structure and content point to a phishing or scam attempt.

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.tw/app/406889139/free-coins-and-spins-game-hack PDF link annotation
    • https://mobile.connecttravel.com.tw/image/data/files/how-to-get-free-robux-joshy_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/is-roblox-free-on-computer_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/roblox-free-roming-camera_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/robux-earning-websites_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/free-robux-and-tix-generator-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/roblox-cheats-and-secrets_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/roblox-project-pokemon-free-pokemon_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/free-gift-cards-robux-codes-no-survey_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.

FilenameKindSourceSize
font_00_sfnt_off00003491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3491 22712 bytes
SHA-256: 52dcd8877db0ebf776564f0d4b4deaab41f596ffc9a9387094534a534369504e
font_01_sfnt_off00006772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6772 18244 bytes
SHA-256: dad70310a45e6814611ff86246f0374db0363e60694e42d40f223b2f02ed44bf

Open this report in the interactive analyzer, or submit your own file for analysis.