Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d828a35b90430e7…

MALICIOUS

PDF

34.7 KB Created: 2021-06-30 07:49:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: bf967aa8f5ad5eafcfa24b03d74cc39e SHA-1: b386a2a2bf1e69d17ab85b626adaf4a3993b1805 SHA-256: 7d828a35b90430e706da7b3e3363b9454387c8c57d1f08b902ab45dd627e5d16
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game hacks and currency, directing users to a known malicious redirector. The document body contains numerous URLs, including the primary redirector http://netcdn.co/app/431946152/the-game-of-roblox-free-roblox-game-hack, which likely leads to a further malicious download or phishing page. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirection workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/the-game-of-roblox-free-roblox-game-hack In PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-a-free-skin-noob-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-easy-december-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-with-inspect-element-no-blogspot_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/launcher-roblox-hack-dll_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-fish-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-vehicle-simulator-codes-free-lamborghini_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-operation-scorpion-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/good-roblox-games-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-on-iphone-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-daily-fb-champion_GM406889139.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
font_00_sfnt_off00003123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3123 22240 bytes
SHA-256: 8c26d9c0d68833932e244f257b44b3603a801769a1880eaca38f3e95629b902e
font_01_sfnt_off00006297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6297 19076 bytes
SHA-256: aa25f0b0634716f73800f77ff6762cf1979f375d346419eb409023461a515ab1

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