Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf0e68382d24530…

MALICIOUS

PDF

37.8 KB Created: 2021-06-29 01:49:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8cbedaeb651056d13b7b5ace36acc69f SHA-1: a0ad1cfadce84895cb980b93cb37929b1afb1ec9 SHA-256: fcf0e68382d24530a7691fb66e03a6c1d38777c33630e3929146c70afaca4f0a
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 0.9981

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/how-to-get-free-packages-on-roblox-game-hack PDF link annotation
    • https://www.tiancom.com.tw/upload/files/jailbreak-roblox-hack-speed_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/como-hackear-cuentas-de-roblox-android_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/kachifpro_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-hack-no-verification_GM431946152.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
stream_002_off00003a28.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3A28 23208 bytes
SHA-256: d743166098a171e528b592b487b10ecbfdad91d96ee798e38ba67b50f9d6adb0
font_01_sfnt_off00006e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E39 19244 bytes
SHA-256: f6dfda10b589004551bcd06f857933ae9183595a53db02ab1bdb8cb5ed0fe404

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