Malicious PDF — malware analysis report

Static analysis result for SHA-256 7996dd9c8fc492a2…

MALICIOUS

PDF

34.9 KB Created: 2021-06-18 21:54:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: fc2f804c70807709af4e9d774aee276d SHA-1: e024e33a1fcbb563d47a74113e2c2e67d7b1000c SHA-256: 7996dd9c8fc492a2c99f0894d34943a22f8ea010d3ab46be7c8de3522d5f23c1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one critical link to a known malicious redirector disguised as a game hack. This lure is designed to trick users into clicking through to potentially harmful content. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to malicious infrastructure.

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.co/app/431946152/cheats-for-roblox-running-simulator-2-game-hack In PDF document text
    • http://www.inoxograde.hr/files/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/wurst-commands_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-to-get-the-roblox-20-body-for-free_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off00002f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2A 22684 bytes
SHA-256: cde0122848aff082c4dfcf91ccfaf7044e81d16aa09296ebd9229b15f5f95009
font_01_sfnt_off000061fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FD 19564 bytes
SHA-256: e57aabeddc6a5460c2ac8857a31da45051a4e15656c3f32e311465165be00909

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