Malicious PDF — malware analysis report

Static analysis result for SHA-256 b67fc1e9d5b6d0e5…

MALICIOUS

PDF

34.2 KB Created: 2021-06-30 18:52:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d98c63362255f484ef6406450e627993 SHA-1: 809e78bb0f8bf0897c6d7b9eadf16d046c802b0a SHA-256: b67fc1e9d5b6d0e5f8af9af981e30f0d30b9c0479248bf24b267b8f3cf21be8c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded links and a lure related to game hacks, specifically for Roblox. The primary heuristic identifies a high-risk PDF link pointing to a "free generator / game hack" redirector. The document body, though partially garbled, reinforces the theme of game hacking. The presence of these lures and the external URL strongly suggest an attempt to trick the user into downloading or accessing malicious content.

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-programs-for-roblox-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/app-hack-online-roblox-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-admin-hacks-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hackaron-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hacker-vs-noob-vs-pro-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/robux-app-free_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-r2d-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F47 22152 bytes
SHA-256: e0e7bd3bd21f13076b9f8748364f2c0500422d45ed97a14380f846cfdbc16dae
font_01_sfnt_off00006040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6040 19232 bytes
SHA-256: 6c0b9ad89951c280e99bf62b0f4e43ecf9748a5309b245c849c941c1a933492e

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