Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff30409bf2a5b5e…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 22:17:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 3a453f35b430b5fabe6771dd00dbfe6c SHA-1: 4a69a0fabfd20ba021cfea2b47f6de719033b37c SHA-256: 3ff30409bf2a5b5eb1d35fc92ae72d886e7c657001eb9dbcb96044c575291eb9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that promise free game hacks or currency. The primary link directs to 'https://netcdn.online/app/479516143/how-do-you-hack-minecraft-game-hack', which is likely part of a phishing or malware distribution chain. The document body, though heavily obfuscated, contains text related to hacking and game generators, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/479516143/how-do-you-hack-minecraft-game-hack In PDF document text
    • http://opac.kolejkrim.edu.my/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-hack-without-human-verification_GM406889139.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_004_off00005651.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5651 25724 bytes
SHA-256: c8a17b7934275ba2ad95eeea5cb9838239290483d2adbf9f8bc1563b1708eb2e
font_01_sfnt_off000090b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B2 18512 bytes
SHA-256: 3291eec6b86d740bab8ba76643ef34913a0c4ab2a930ce2f65b8b3fd60c7ead6

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