Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a47007736ae35eb…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 02:44:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c23647ecb5c68c9b9ddb4cb5e25180b6 SHA-1: 1a8f4c0c5803e770a43ace718da35c5c3d15e4b8 SHA-256: 4a47007736ae35eb8c4136cc7cca570d2ac4b7705ce73bd4bf1ce24927f87f29
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/get-free-roblox-robux-on-therobuxapp-com-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-often-pubg-uc-benefits-paid_GM1330123889.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-jailbreak-free-vip-server-link-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/consle-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/jojno-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-do-you-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/mac-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/blox-land-free-robux_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_off00002dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC3 22716 bytes
SHA-256: 73f77d8e080adefe0dffa1af7a3a75f9a7b067ba4576412e8171ef1a93ca6c74
font_01_sfnt_off000060b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B3 19496 bytes
SHA-256: 7d1789622d6f4e1c3db8351bffa39eac857a02e1a1427777075e07e584046fe6

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