Malicious PDF — malware analysis report

Static analysis result for SHA-256 68645cb1f89a5bd7…

MALICIOUS

PDF

41.9 KB Created: 2021-05-19 21:24:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1d3095b9ad586167bd6bb25521e8c624 SHA-1: 7be3a8ace49c1a5db050bb10c686c6afb8b8a06a SHA-256: 68645cb1f89a5bd717b0aab630ddfdfb0037ccbac70f493ab11eed50d8612adc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free generators'. The document body, though partially corrupted, contains text and URLs consistent with a lure for potentially unwanted or malicious software. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/free-coin-master-link-2021-game-hack In PDF document text
    • http://pesok-rk.ru/images/mc-hacks_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-tiktok-followers-quick_GM835599320.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E4 24904 bytes
SHA-256: 552a4b95a3f3ec247f244c889acac4e45da03c48ae72e767e17a406bed86c4f2
font_01_sfnt_off0000817b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x817B 18284 bytes
SHA-256: 15cbb039240871f663533138b429172a54e714a7a81015087603783b9c5e24ba

Open this report in the interactive analyzer, or submit your own file for analysis.