Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf122d825d83c09f…

MALICIOUS

PDF

49.0 KB Created: 2021-06-03 05:26:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f91b224dc9c404a8b14bf2f18705e69c SHA-1: ab7754d70da32d2c754a288d8ddd175f699cef7f SHA-256: bf122d825d83c09f02ba2606d85d490ac97e0ea0b3b02444b4a537282a12b864
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 0.9796

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.online/app/431946152/how-do-you-get-roblox-money-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/robux-hack-program_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/optifine-pe_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-apk-hack-358_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005161.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5161 27120 bytes
SHA-256: fa9bfe0f31f23bb3ec6abcc4a1a99b13bfc3e40b561ea4bbfed7905d340c174c
font_01_sfnt_off00008f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F62 3500 bytes
SHA-256: e49a868379cd3c37e631c5a53c010e21f38d803532a2b8417aee82315d4e8634
font_02_sfnt_off00009b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B04 18896 bytes
SHA-256: 29cfb48d0033888f81e151c2829fb396172311d25236ba798d4831208641a69e

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