Malicious PDF — malware analysis report

Static analysis result for SHA-256 816f7f5c6eb6fa7a…

MALICIOUS

PDF

33.7 KB Created: 2021-06-19 13:34:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9ddbab3f23c628d045705406daee9e46 SHA-1: 6b2cd00f2a08fd6b560adbe0d16e5c317fef73c8 SHA-256: 816f7f5c6eb6fa7a19751f9bd81e45381fc68c05ed90af1a6d36de62625ee7b4
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to websites offering game hacks and generators, specifically targeting popular games like Roblox. The primary link, http://netcdn.co/app/431946152/roblox-apk-hacks-game-hack, is flagged as a malicious redirector. The document's content and embedded URLs strongly suggest a lure to download potentially unwanted or malicious software, masquerading as cheats or free in-game currency. No scripts were extracted, but the document's structure and heuristic firings indicate a malicious redirection attempt.

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/roblox-apk-hacks-game-hack In PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-codes-for-roblox-download-apk_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-18-000-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-hack-a-roblox-account-password-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/cheating-on-my-roblox-gf_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-apk-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-roblox-gift-card-codes-not-used_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/tiktok-free-vs-paid_GM835599320.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-pin-codes-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-no-survey-or-human-verification_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_off00002f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3E 21764 bytes
SHA-256: 57860d61789f13860d92fc84f033f86983a99963280e3c6c538fa166dd7b23ff
font_01_sfnt_off00005f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F45 18832 bytes
SHA-256: 485341a6a6f0f1221817316777b433520882a55506d83146bae6f917094dc586

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