Malicious PDF — malware analysis report

Static analysis result for SHA-256 9930522a8608b4e8…

MALICIOUS

PDF

34.9 KB Created: 2021-06-26 08:53:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5fa650fc1ff687dbc2d477ea8948f103 SHA-1: b518623bd8587428f1e69bd2460f64df8f42cf74 SHA-256: 9930522a8608b4e80292c73840209072fc6e85e2783e61fa92039d6497477220
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a 'free generator / game hack' lure, directing users to a malicious URL. The document body and embedded URLs reinforce this lure, suggesting an attempt to trick users into visiting a site that likely hosts malware or exploits. No scripts were extracted, but the overall pattern indicates a phishing attempt via a malicious document.

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/free-black-shirt-roblox-game-hack PDF link annotation
    • https://library.stikeswnpalu.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-robux-without-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-without-extra_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hack-robux-infinitos-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-be-a-wannabe-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/absolutely-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/games-in-roblox-that-give-you-free-items_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-fashion-famous-cheats_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/download-cheat-roblox-lumber-tycoon-2_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_off00003194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3194 22320 bytes
SHA-256: 6e3017431337440aabc0427d2af88a4ad1db9a1167a05e80ad25e882d9632220
font_01_sfnt_off0000631d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631D 19212 bytes
SHA-256: 64c8911dd465b2323caabf87bf95e853c476551e39dbe24d4060235df9de7231

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