Malicious PDF — malware analysis report

Static analysis result for SHA-256 de3714526a2451b4…

MALICIOUS

PDF

34.2 KB Created: 2021-07-07 13:58:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: aba2892f2b77fb70e72448f0df8fd140 SHA-1: ae6f58d5472940a2d8851d19da08bcba85c6f56a SHA-256: de3714526a2451b46b3d22bd2d03c066230445b2432901e771daac481a18b893
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and generators, embedding multiple links that redirect to known malicious infrastructure. The primary link, http://netcdn.tw/app/431946152/roblox-got-talent-piano-hack-game-hack, is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into downloading further malicious content or visiting scam pages, aligning with common phishing and malware distribution tactics.

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/roblox-got-talent-piano-hack-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/100-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-thinknoodles-free-fall_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/optifine-mcpe_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/master-coin-free_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-group_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-hack_GM431946152.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_off00003023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3023 22032 bytes
SHA-256: 54f89c6dd5e5a7e55eb94406770b4fd384efb264a029afec954bfbc4469f3d88
font_01_sfnt_off0000612e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612E 18848 bytes
SHA-256: 1687431caf3beadc7b562a83e270983514225fedcb23e2af2134329d2be0093e

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