Malicious PDF — malware analysis report

Static analysis result for SHA-256 f46dcfb78a9092f6…

MALICIOUS

PDF

35.9 KB Created: 2021-07-03 11:02:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8f1825292b080536b01e7390f30e0fdc SHA-1: e3815612df90e4a1a3208ffe770d153b48e1458f SHA-256: f46dcfb78a9092f68130601abad0c4ece91269882c901180ad29e7e8793f86fb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with one prominent URL identified as malicious redirector infrastructure. The document body and embedded links suggest a lure for game hacks or free items, designed to trick users into visiting potentially harmful sites. The ML classifier also strongly indicated maliciousness.

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/431946152/free-robux-no-verification-2021-android-game-hack In PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-booga-booga-hack-intalieren-deutsch_GM431946152.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/all-black-roblox-free_GM431946152.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/114-hacks_GM479516143.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-free-stuff-in-catalog-in-roblox_GM431946152.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-heaven-daily-free-spins_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
font_00_sfnt_off000032cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32CC 22552 bytes
SHA-256: ef273f7c369e792ac5f8fdde20c27bd5ac6ccf64b112dfbc8c4515d50e9c09be
font_01_sfnt_off0000654c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 19648 bytes
SHA-256: fddc38f60f29949e87a17df7f7945f6cf104ea1bd46a51d994ebbbbf43946b8f

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