Malicious PDF — malware analysis report

Static analysis result for SHA-256 57eef5b460db6a7d…

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 06:04:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: bd74d2c447a4a8c6c9312eadb0168dda SHA-1: 04751980381c3027a141a39a824bb9c9f5194991 SHA-256: 57eef5b460db6a7d886e8698982c362638f77b84c894c25bf7363f2a1c59a0d3
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as free game hacks or generators. The document body, though heavily obfuscated, contains text related to 'Minecraft Java Edition Free Code' and a URL that aligns with the heuristic findings. The presence of these lures and malicious links strongly suggests a phishing or scam attempt designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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
  • 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/minecraft-java-edition-free-code-game-hack In PDF document text
    • http://lib-smansumsel.sch.id/repository/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/robux-in_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/mcpe-com_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-online-free_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/minecraft-hacked-client-18_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000053d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53D8 24828 bytes
SHA-256: 1027786ab36e15605219054e0751a8c59adbdbdb35f6ce2d6774142a991cc678
font_01_sfnt_off00008bf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF0 2856 bytes
SHA-256: 20dc0c19885f9eb84a70adf762c7af2bb5b336981fcfa4d14a25b177438c211a
font_02_sfnt_off000095c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95C5 18164 bytes
SHA-256: e28d0ded599416f75746d42b4ddd49ac4ed584cd54835945167b34c6d366202b

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