Malicious PDF — malware analysis report

Static analysis result for SHA-256 38b94b502bb1931c…

MALICIOUS

PDF

46.1 KB Created: 2021-05-17 09:05:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 6df609bdae8b60b988e602e8a22368ad SHA-1: cbe74b443a7d9cad682d7d82bf6846b63de75c35 SHA-256: 38b94b502bb1931cb9cc2747a6e23785564db66080c9837c25d15702a9b1fb8b
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 0.9432

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.xyz/app/406889139/daily-free-spin-coin-master-link-game-hack PDF link annotation
    • http://pdia.de/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/where-to-get-robux_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/coin-master-today_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/free-coin-master-gold-cards_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_003_off0000485f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x485F 24356 bytes
SHA-256: 6441d91a32b1e1a1b6a4ba7e7c9d023a2a5cf6d529d24d2f1a0bc2c281ba0ea3
font_01_sfnt_off00007f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F44 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_02_sfnt_off0000915c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x915C 18476 bytes
SHA-256: 13087f23ced5a654764a402ace47e06b7ceeb886891228a443e0cb07dd9c4176

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