Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd121261b5f0724…

MALICIOUS

PDF

34.4 KB Created: 2021-06-19 19:07:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c8994dc1bc11903443d51412dddd052e SHA-1: e6a992cd4ff13c59b2d83f26ae008b19fefe08bf SHA-256: bdd121261b5f0724e492a9ea5966a9166a9bbb42a55e024dcb04df7797df14c9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, http://netcdn.co/app/431946152/ccv3-roblox-cheats-2021-game-hack, which is disguised as a 'game hack' generator. The document body and embedded URLs reinforce this lure, aiming to trick users into clicking through to potentially malicious websites. No scripts were extracted, but the presence of malicious redirectors and the lure suggest a phishing or malware distribution attempt.

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/ccv3-roblox-cheats-2021-game-hack In PDF document text
    • https://esl.hess.com.tw/image/data/files/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/roblox-free-items_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/roblox-mac-hacks-2021_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/roblox-cheats-code-for-money_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/roblox-source_GM431946152.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://esl.hess.com.tw/image/data/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00002fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBB 21900 bytes
SHA-256: d79b1917760bcaf9cfc1dfe13599f529997ab08c61071a0b932c31aa583c0c86
font_01_sfnt_off00006011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6011 19448 bytes
SHA-256: 0add2e283306aaed02262ed134c69091ca1def3fd9f7cb33e5e58da4100fbb38

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