Malicious PDF — malware analysis report

Static analysis result for SHA-256 940e0bfee45939d6…

MALICIOUS

PDF

34.5 KB Created: 2021-07-08 05:25:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 5eb976f6c783a68354d635399ce42504 SHA-1: 939792e16309471ed89dad215bcc38de72538033 SHA-256: 940e0bfee45939d62d08d9dd82144223a30dcbacc5b08d79e8a7ae1d326c8d42
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure URL is http://netcdn.tw/app/479516143/how-to-downgrade-minecraft-pe-game-hack, which is flagged as a malicious redirector. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/how-to-downgrade-minecraft-pe-game-hack In PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/car-sim-free-code-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-name-change_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-2021-agreeing_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/download-hack-roblox-adopt-me-money_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/mm2-roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/kazok-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-no-survey-works_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-admin-in-roblox_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
font_00_sfnt_off00003196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3196 22352 bytes
SHA-256: 5bb2bc2a4a573022747f3d1e557491077e35fc30cb85ad57b51733c486e39a01
font_01_sfnt_off00006349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6349 18656 bytes
SHA-256: f671632c41bdcd8896512b89e0179723263a2bce0274879a7730ace5e1a9329c

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