Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f5cbb0fe7662fc…

MALICIOUS

PDF

47.2 KB Created: 2021-06-07 20:34:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1c0b8c8370c09021e4b509b2c4a9b4a9 SHA-1: 52851a176af8e92e6387964cd679f470a5ef85af SHA-256: 06f5cbb0fe7662fcee7f242083e3c8cf93f2d030046d1ff33b27a96577c4b4bb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures for popular games like Roblox. The document body, though heavily obfuscated, contains URLs that are consistent with these lures. The primary function appears to be redirecting users to potentially malicious websites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/roblox-free-robux-2021-game-hack In PDF document text
    • http://ines.co.rs/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/login-to-tiktok-free_GM835599320.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/pokemon-go-free-legendary_GM1094591345.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004dd9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DD9 25252 bytes
SHA-256: b79271fdd12a4ab8bdc16404cf5839a56166007c80e243f29a97fc68cede00dd
font_01_sfnt_off000087ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87EF 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9501 18488 bytes
SHA-256: a3208fce9527d2278c234a1a61d28fcd25fb7af8e8cbd61a3e8613f4dc1586fb

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