Malicious PDF — malware analysis report

Static analysis result for SHA-256 3966e238c8cc69d4…

MALICIOUS

PDF

41.3 KB Created: 2021-05-16 22:16:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: a6675e796a2452c89d8e80e47a270101 SHA-1: b0939135510054181baccf8460635ae50f0eaa34 SHA-256: 3966e238c8cc69d46c82a2734e3cffc902792ecd18ed8cbda294ec07b3ff1985
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting "game hacks" and "free spins" for popular games. The primary redirect URL is https://netcdn.xyz/app/406889139/coin-master-strategy-game-hack, which is designed to lure users into downloading further malicious content or visiting other compromised sites. The document body and heuristics confirm the use of redirector links, indicating a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/coin-master-strategy-game-hack In PDF document text
    • http://bgnails.nl/images/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/rbxdemon_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/robux-fun-hack_GM431946152.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
stream_003_off0000476d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x476D 25052 bytes
SHA-256: 52884469994da9c1a0aa85fb96011a5f7feb0421992785775e484f03c9e108a9
font_01_sfnt_off00007f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9E 18012 bytes
SHA-256: 2725a275d7a7b6911fa27290e512be704a3c63b9da69f1e3192c77e1806eef94

Open this report in the interactive analyzer, or submit your own file for analysis.