Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3af789745ba4aeb…

MALICIOUS

PDF

34.4 KB Created: 2021-06-20 10:26:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8ed5454b43af484aa1828bb2ed6dec3b SHA-1: e086db7a3b5cde7a8c7f4012546e5939e5c16c16 SHA-256: f3af789745ba4aebf80687558be0b5945473fd8631f97f21497a47828ba44dd9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free in-game items, directing users to the URL http://netcdn.co/app/431946152/how-to-get-free-avatar-items-in-roblox-game-hack. This URL likely leads to a malicious payload or phishing site. The ML classifier strongly indicated maliciousness, and the presence of numerous game-related hack URLs reinforces the social engineering aspect.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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.co/app/431946152/how-to-get-free-avatar-items-in-roblox-game-hack PDF link annotation
    • http://library.stikessuakainsan.ac.id//repository/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/robux-hack-not-patched_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-script-builder-6-free-codes_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-no-generator-or-survey_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/get-free-spins-on-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-a-penguin-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-hack-no-human-verification_GM406889139.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_off00002fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA3 22092 bytes
SHA-256: f27db7803cf73c8646bdbf7bfef54a7e6d87795e66165b3ac8c0711e1118bc25
font_01_sfnt_off00006080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6080 19292 bytes
SHA-256: 93da18264335b8b8fc422d482faa417d8e57614d34544bc84da77c95aab94286

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