Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5e7b75b13af77b…

MALICIOUS

PDF

45.8 KB Created: 2021-06-03 13:32:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cf88f5e9b338d2c74049c64f7b445b02 SHA-1: 9483d7edaac56117982d4adf050e89e2ff51099d SHA-256: 7b5e7b75b13af77b5072f50f62b8118053e1fa525582c2aa13258728f7f1eb74
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a high-confidence heuristic indicating a lure for game hacks. The primary URL, https://netcdn.online/app/406889139/how-to-hack-coin-master-ios-no-jailbreak-game-hack, is presented as a 'free generator / game hack'. While no scripts were explicitly extracted, the presence of embedded URIs and the ML classifier's high confidence score suggest malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/406889139/how-to-hack-coin-master-ios-no-jailbreak-game-hack PDF link annotation
    • http://lib.akpnbahtera.ac.id/repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/pubg-uc-event_GM1330123889.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/claim-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/minecraft-client_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-pokemon-go-accounts_GM1094591345.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-minecraft-premium-account_GM479516143.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
stream_004_off000051c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C6 27528 bytes
SHA-256: 8c99160cc42a0bc1f4da38918ddc7b575e415a519e15641f5a9a890e34ecde57
font_01_sfnt_off0000908c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x908C 18280 bytes
SHA-256: 245da73fd6a4adf64d20a0032a195ec6168575235dd94336deea9f66564d80a8

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