Malicious PDF — malware analysis report

Static analysis result for SHA-256 56a4b776a179fe31…

MALICIOUS

PDF

42.5 KB Created: 2021-05-11 14:30:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 596d76ce739ae29710bd860a00f2748a SHA-1: 07a6649569e5aa2e456177df82c03177a2ef7821 SHA-256: 56a4b776a179fe317221b363f7d8273fdd45e4602ba04b98247089fe1c3594bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains links to a known malicious redirector infrastructure, specifically advertising game hacks and generators. The document body, though heavily obfuscated, contains references to 'Minecraft Free Download Ios' and a URL matching the malicious redirector. This indicates a phishing or scam attempt to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.
  • 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.xyz/app/479516143/minecraft-free-download-ios-game-hack In PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/roblox-comcom_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/how-to-hack-roblox-jailbreak_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
stream_003_off00004c18.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C18 24348 bytes
SHA-256: beee37937dd953667cda6708e2b65b7d75e62c69022b875c3de9ecdde6376061
font_01_sfnt_off000083e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E6 18292 bytes
SHA-256: 753811b4f273a5193b6cf6bc91b948249e8ca1a4fe068b1e84efe9b046d1d7eb

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