Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b08b04e1df799fa…

MALICIOUS

PDF

41.2 KB Created: 2021-05-13 18:31:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5b44feb1a7c626c9a9e623e82c61576d SHA-1: d7c24a34c8351f46501eb155eed1b83b2f1a288d SHA-256: 4b08b04e1df799fa9bd0248111fcf4319490b13ae6c10f31a01fdc1c1fe7a0b3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links designed to lure users to malicious websites, masquerading as game-related content. The primary redirector URL, 'https://netcdn.xyz/app/479516143/minecraft-free-trial-game-hack', is flagged as malicious. The document body, though heavily obfuscated, contains references to game hacks and generators, reinforcing the lure. The presence of multiple redirector links and the ML classifier's high confidence score indicate a deliberate malicious intent to lead users to potentially harmful content.

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/479516143/minecraft-free-trial-game-hack In PDF document text
    • https://donrazvitie.ru/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://donrazvitie.ru/images/coin-master-online_GM406889139.pdfIn PDF document text
    • https://donrazvitie.ru/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://donrazvitie.ru/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://donrazvitie.ru/images/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://donrazvitie.ru/images/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • https://donrazvitie.ru/images/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • https://donrazvitie.ru/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://donrazvitie.ru/images/withdraw-robux_GM431946152.pdfIn PDF document text
    • https://donrazvitie.ru/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://donrazvitie.ru/images/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://donrazvitie.ru/images/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://donrazvitie.ru/images/robux-gratis_GM431946152.pdfIn PDF document text
    • https://donrazvitie.ru/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://donrazvitie.ru/images/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://donrazvitie.ru/images/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://donrazvitie.ru/images/blox-fun-info_GM431946152.pdfIn PDF document text
    • https://donrazvitie.ru/images/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://donrazvitie.ru/images/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://donrazvitie.ru/images/coin-master-free-spins-link-blogspot_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_off0000490c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490C 24416 bytes
SHA-256: a186ff1bf974a5d9abec9199a84712967e01cace405144f3f02b1522ef4fbd20
font_01_sfnt_off000080c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C9 17644 bytes
SHA-256: eaa999d9fcd0e41c3411a6787ff304b3b9a642a81f97c4ae06503d53e3265cce

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