Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d967715391559c7…

MALICIOUS

PDF

34.1 KB Created: 2021-06-26 08:08:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fb2740ddc446337fe64240180ca04d46 SHA-1: c935353499d9d1675c25eb1c45d68c028bbf122f SHA-256: 8d967715391559c7623b51f75e76d99e771107c33d6386418866fda5c6b206de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game-related content to trick users into clicking malicious links. The document contains multiple embedded URLs that point to redirectors and other malicious PDFs, indicating a clear intent to lead the user to harmful content. The ML classifier and specific PDF heuristics strongly support this malicious classification.

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/a-hack-to-get-the-bage-admin-on-roblox-game-hack In PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/impact-hack-roblox-hp_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-arsenal-hacks-mobile_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-things-from-the-catalog-on-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-i-want-to-break-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-do-you-make-a-free-robux-game_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/slaying-simulator-roblox-no-cheat_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_off00002f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0E 21812 bytes
SHA-256: fa23039d63c679d8533ba08e0a9a47cd073c34d5f1cc0a9a37412478655015bf
font_01_sfnt_off00005f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F25 19480 bytes
SHA-256: a1f71b1e8f3918df3351341f4e446911a7c86a35e3ff797524b6449c3ab1eeff

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