Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc9f678b9d8d9e39…

MALICIOUS

PDF

43.4 KB Created: 2021-05-15 12:34:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 911d90e3fe65a02b9d00214099f91841 SHA-1: 725d55a2078c33d9d81ecc385c225fd4557e9dc9 SHA-256: cc9f678b9d8d9e39f30807f04e6d6096bf1fb8f9c2a2c41ae1b4c0e3ed3dee0c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and sites offering game hacks and free spins, indicating a social engineering lure. The heuristic PDF_GAME_HACK_REDIRECT_LURE specifically flags this behavior. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, likely to a site that may host further malicious content or exploit kits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/406889139/daily-free-spins-coin-master-game-hack In PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e35.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E35 25632 bytes
SHA-256: 6f71a65796b2993a14a9fbc8bca7f2c22b99a49c7f131877f0228999ace49973
font_01_sfnt_off00008730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8730 18308 bytes
SHA-256: 814bd0a2b88bdef89f3245e401f7fc464bd7314e61fe604409dcfddce4500050

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