Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d1100666fc02353…

MALICIOUS

PDF

35.6 KB Created: 2021-06-18 07:48:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 34dab9f5072a6ae0c6a12898defd060d SHA-1: 2070139c3b5cb6d4a45e1b0037420833e6e133fc SHA-256: 6d1100666fc023537b1dd18089d9cfd408bd2112ad5fc939c0d650c4bcba6a70
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that lead to known malicious redirector infrastructure, specifically targeting users with lures for game hacks and free currency. The document body and heuristics indicate a clear intent to redirect users to potentially harmful websites, likely for further exploitation or malware delivery. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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-elemental-battlegrounds-hacks-win10-2021-game-hack In PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-promo-codes-2021-july_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/games-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/www-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-cheat-codes-for-elemental-war_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/www-rbx-com_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/descargar-hacks-para-roblox-pc_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/pokemon-go-free-2021_GM1094591345.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
font_00_sfnt_off00002fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE7 22764 bytes
SHA-256: 8ea56bfe1ba157a48a8ee36d81537efe3f893f5f9510d18428a0f4f383549bba
font_01_sfnt_off000062c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C9 20052 bytes
SHA-256: 60cfb71cc687be82d5568ff839328ef85950795b84fe88bef63dd5ec27bed85e

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