Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1c32bfb7407c0d4…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 21:33:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: de294c280be076e953d38a7fda9803f7 SHA-1: 359fe667906eebbf7ee016c8424281e29e95971d SHA-256: d1c32bfb7407c0d47eadbb985e07bc31c8b18008a24194866d2900f0e8449fbc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with game-related cheats and hacks. The primary malicious URL identified is http://netcdn.tw/app/479516143/minecraft-pocket-edition-download-free-pe-calculator-game-hack, which is associated with a game hack generator. The document body and embedded links suggest a social engineering tactic to trick users into visiting these sites, likely leading to further malware downloads or phishing attempts.

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.tw/app/479516143/minecraft-pocket-edition-download-free-pe-calculator-game-hack In PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/drawing-anime-on-roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/any-cheats-for-tycoon-roblox-games_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-robux-for-free-simple-steps_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/pastebin-roblox-free-robux-real_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/games-that-will-give-u-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/sign-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/robux-cheats-no-survey_GM431946152.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_off00003264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3264 22152 bytes
SHA-256: 0217639038ab4b4bbe30ee2ae244059224298277d7da34eb46121aceef32cfac
font_01_sfnt_off0000632e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632E 19044 bytes
SHA-256: 34b20f278f24286c6699cd4d98c19fc9e238f7be3ea9ba45b8deb04e7e0e65ff

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