Malicious PDF — malware analysis report

Static analysis result for SHA-256 9afc9d6c5f9f7829…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 23:31:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5279ddafebafd03528daaee1aceaddb2 SHA-1: 6ce80328a8885bd74f9b506ec5cd3eb6e66d164e SHA-256: 9afc9d6c5f9f7829d0a535792af3cb6bdb6594a4a4f56af52a2af7ab609c6f20
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a high-severity heuristic firing for a "GAME_HACK_REDIRECT_LURE" pointing to a suspicious URL. The document body also contains this URL, suggesting a social engineering attempt to trick users into visiting a site that likely hosts further malicious content or exploits. No scripts were extracted, but the overall pattern suggests a phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://netcdn.tw/app/406889139/free-coin-master-spins-blog-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/coin-master-hack-without-verification-for-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-create-clan-in-roblox-for-free-account_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-hack-dungueon-questcom_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/robux-page_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/can-tiktok-free-download_GM835599320.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-robux-on-discord_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-girl-hair-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hacking-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-online-hack-generator_GM431946152.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_off00003116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3116 23104 bytes
SHA-256: 08aa5e8d9230eeec3d66b46cec48de53c9b7efcd27e65293bfd33a35af10bb60
font_01_sfnt_off00006517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6517 18464 bytes
SHA-256: 4bcaff5a2789d7186c9fa4ee96d365b8eba602a20bbe86fe3da838c25a781984

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