Malicious PDF — malware analysis report

Static analysis result for SHA-256 91d33f47f4a662e9…

MALICIOUS

PDF

44.0 KB Created: 2021-05-13 10:00:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a4feb1fa26326306992356b4ddf29393 SHA-1: bc6965f8bde8c8ea05983f5aaa0d5f0ecc46e7d9 SHA-256: 91d33f47f4a662e9ec4125ce5ff8c78691d372050d3c26c02b3f4802209428cf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free game currency and hacks, directing users to a known malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/how-to-get-free-robux-hack-2021-game-hack In PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-connection-lost_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-800-robux_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/minecraft-pe-hacked-client-download_GM479516143.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_off00004d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D56 25472 bytes
SHA-256: cdf6207474f8fa6dc8e42414bbd507d8628dd21c0be737e670ac4f2c7bdb4d59
font_01_sfnt_off00008717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8717 19084 bytes
SHA-256: bf126c80224e4ece1a877f3c45a4e2f725662c205f8b78a709aa4c80730d283c

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