Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fe28c79f3135de4…

MALICIOUS

PDF

47.6 KB Created: 2021-06-03 05:26:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: cfc959f51e7803fa1fb0f92d0b529bd3 SHA-1: 9cedc68ee6fd7ab49f50259c0178223210ffa6f7 SHA-256: 2fe28c79f3135de4fba48d1d80121c886660bc46aa5d9a1e067bd03ecb0fc615
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9769

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/479516143/best-free-hacked-client-game-hack PDF link annotation
    • https://library.pqm.co.id/repository/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/mcpe-client_GM479516143.pdfIn PDF document text
    • https://library.pqm.co.id/repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://library.pqm.co.id/repository/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/roblox-hack-gg-uardika_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://library.pqm.co.id/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51BD 26092 bytes
SHA-256: 6f4ef37ccd9577de8d2432ac87c681c6cf1ed25a065ce855669144cc6e99bce8
font_01_sfnt_off00008da2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA2 2912 bytes
SHA-256: fa76cc2dab30b56d5305de71ce949b6adffd6580af2f26905a33966a3200adbb
font_02_sfnt_off0000979d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x979D 18200 bytes
SHA-256: f9e1919cba188461631b4d1f41fa639bbd05523e10553c39d41e2ec7b66d941b

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