Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d4482c6fe19dcc…

MALICIOUS

PDF

44.4 KB Created: 2021-06-08 21:13:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d20327dadd529e1261e74e0a5cb7bcb8 SHA-1: a9d790787b47e10165e97827f3ba3e1ccf9ae6f2 SHA-256: 82d4482c6fe19dcc83c7cec8647f1be3293fa904752669c508af6285a482d4d3
160 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and free Robux to trick users into clicking a malicious link. The link redirects to infrastructure known for malicious activity, indicating a phishing or scam attempt. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/how-to-get-robux-on-roblox-no-hacks-game-hack In PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/hack-zombi-rush-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-tiktok-followers-without-downloading-apps_GM835599320.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-game_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-afk-saber-simulator-hack_GM431946152.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_off0000524d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x524D 24288 bytes
SHA-256: 3a8e3332398c2860e0d25dc4419b850e78401db7a3557335a9919f43afe3ee36
font_01_sfnt_off000089a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A9 18588 bytes
SHA-256: fc12b9c575b0425fe9ccb37f0df4d575f5e5e51d86276d024b142a94b20170cd

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