Malicious PDF — malware analysis report

Static analysis result for SHA-256 84897d2fbc26cad4…

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 02:02:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1c74fba4dc3cc2e46c188ba82bc569aa SHA-1: b22a47249e44ae31c901a37258c77fbf5843b702 SHA-256: 84897d2fbc26cad4dc0356a0b393e45ef9a2d272bb9ec3776de73afb00b60e0a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to websites offering 'game hacks' or 'generators', indicating a lure for users to click on malicious content. The ML classifier strongly flagged this PDF as malicious, and heuristics identified it as a redirector link. The document body and embedded URLs suggest a social engineering attempt to trick users into visiting potentially harmful sites.

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/creepy-hacker-games-on-roblox-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-free-codes-that-make-things-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/survivor-hacks-script-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/use-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/without-human-verification-pubg-uc-hack_GM1330123889.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-2021-windows-10_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-stuff-in-dungeon-quest-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/cheat-roblox-lumber-tyccon_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-online_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free4mobile-info-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hacking-a-fans-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-robux-on-ipad-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/40-free-spins-coin-master_GM406889139.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_off00002f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9A 22528 bytes
SHA-256: 53860edf2f0eb4ac1b8f1abbd8148895495a2dcc5dba2e7ac4e8ad5434fcbdeb
font_01_sfnt_off0000620a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620A 19272 bytes
SHA-256: 224002160274fd74bf6b4f7a48a5220857cab35f8333b336ca18b6d257d240c8

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