Malicious PDF — malware analysis report

Static analysis result for SHA-256 568c3019ad725461…

MALICIOUS

PDF

47.5 KB Created: 2021-06-03 11:16:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 4f739c57b4a8c8041c94613b7d1df4ad SHA-1: e7b56a0fad975ff2b0026884989d6cd98dfd5bef SHA-256: 568c3019ad7254616ad93844ea0f203dab2ebab9419cb81e78d535f4046f28d9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, disguised as free game currency or hacks. The primary malicious link identified is https://netcdn.online/app/406889139/free-spin-and-daily-news-coin-master-game-hack. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.online/app/406889139/free-spin-and-daily-news-coin-master-game-hack In PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-that-actually-works-no-gift-card_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/roblox-re_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/pubg-uc-redeem-code_GM1330123889.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/toolbox-apk_GM479516143.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051c3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C3 26896 bytes
SHA-256: b88b838463ba359de1fe57119e039ab7691bdebf93fd765e78c2c4e3f8296278
font_01_sfnt_off00008bef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEF 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000095a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95A1 18648 bytes
SHA-256: 1b97510549e3d8fe11dfd7453b1479af326f6ce77077d5a4dbd4033950bc4681

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