Malicious PDF — malware analysis report

Static analysis result for SHA-256 46efc899d0cdbe94…

MALICIOUS

PDF

34.7 KB Created: 2021-07-09 09:59:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: dd9a3fa6a9294bdfacf478a949ce6cdd SHA-1: d2f53762b8c211dd05cb76e5468df2e9162ba417 SHA-256: 46efc899d0cdbe9432a78ab1d8d81df158ade0968522140f20a9280a4ad6b621
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure related to game hacks and free spins, directing users to a known malicious redirector URL. The document's content and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the 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.tw/app/406889139/how-can-i-get-free-spins-on-coin-master-game-hack In PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-roblox-accounts-november-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/clicksfly-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/how-hack-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/roblox-account-taker_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/pastebin-hack-robux-gratis_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-robux-codes-for-kids_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-in-three-simple-steps_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-real-credit-card-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-coin-master-hacks-no-verification_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
stream_002_off000030fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30FC 23032 bytes
SHA-256: 666b6d64b508350e57544238e881d7f0e5f04a084e210d7da0d54dcaa6a30faa
font_01_sfnt_off000064b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B4 18336 bytes
SHA-256: 37ca97c2691b43cd452b048f4f7c78c5ad4d0dd2b0202caad78cb0ffb9f2e73b

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