Malicious PDF — malware analysis report

Static analysis result for SHA-256 cac2010307bb09ba…

MALICIOUS

PDF

53.5 KB Created: 2021-06-09 14:57:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 48a6e61e9be4f1ccdb0ae9840ba051f5 SHA-1: 6ad9eb14e09fbffa98cfcba6dcbd2afc64a1acaf SHA-256: cac2010307bb09ba08239689c77cd2f825283b7345f2646cdcf8244021ce01f5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary redirector URL identified is https://netcdn.tw/app/431946152/www-robuxmaniac-free-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content. The presence of a visual download button lure further supports this malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9821

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.tw/app/431946152/www-robuxmaniac-free-robux-game-hack In PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/i-got-hacked-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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_004_off0000551e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x551E 39524 bytes
SHA-256: eefa3be4b66ebcba40b459aa082661e87bd8d1029a30212e906b54089300ed48
font_01_sfnt_off0000ad57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD57 18984 bytes
SHA-256: b24df10d8f54e09672c3abc0a0f474fe659cfd1ef54c4a732199d3d4d4a987fb

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