Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1ed16c877043f0d…

MALICIOUS

PDF

36.3 KB Created: 2021-06-18 21:29:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d07978f238af7d0876ddea02fe48a09c SHA-1: 173e601499f088df8441fe1c87489881170f2fba SHA-256: a1ed16c877043f0de71dc6f57a6df3fcb619231af9b9d12913f8eafc08b32ebe
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to a malicious URL, masquerading as a game hack or generator. The ML classifier strongly indicated maliciousness, and the presence of multiple game-related lures suggests a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded links are designed to trick users into visiting potentially harmful sites.

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/hack-viexploid-madcity-roblox-game-hack PDF link annotation
    • https://tnupacktour.com.tw/image/data/files/pokemon-go-free-shiny-celebi_GM1094591345.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-hack-roblox-accounts-2021-android_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/rbxboost-earn-free-roblox-robux-by-completing-surveys_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-headless-head-roblox_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-get-50-robux-free-2021_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/roblox-blox-burg-money-hack_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-spin-coin-master-hack-2021_GM406889139.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_off000034a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A2 22392 bytes
SHA-256: b8089fc14b4d28d44fda521009216055465381b7d6ca0141f45bc5fed56f76f5
font_01_sfnt_off00006694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6694 19740 bytes
SHA-256: 45ee3c84acb57e6e2149d4839ca6a476ad880ed26dd20b998d94775bd0db48e0

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