Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb737e84f354e81…

MALICIOUS

PDF

33.9 KB Created: 2021-06-20 01:17:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 459bd3cda27b1127dfea4946c45d3b0e SHA-1: 4c32eb3caf43648e7ffe81e0d18e3de9b882f5e5 SHA-256: 2fb737e84f354e81c44f31f228ebc1d407d5d4a47931b2fe997250b166829888
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as offers for free game currency or hacks. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to trick users into visiting malicious websites. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a phishing campaign.

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/free-robux-card-codes-deutsche-game-hack In PDF document text
    • http://kierowcyhgv.uk/images/hacker-fedora-roblox_GM431946152.pdfIn PDF document text
    • http://kierowcyhgv.uk/images/free-robux-codes-adopt-me_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://kierowcyhgv.uk/images/how-to-hack-on-cbro-roblox_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://kierowcyhgv.uk/images/free-trading-bot-for-roblox_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/free-roblox-printables_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/hack-client_GM479516143.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/free-robux-no-survey-or-human-verification_GM431946152.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_off00002ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE1 21688 bytes
SHA-256: 27294156f7d129e6e6bcf6da74810a367ec8c3f6ecee9c769a66424a5f89a9e4
font_01_sfnt_off00005e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8D 19328 bytes
SHA-256: 2d787f0052b016a848fc75f04365af9b52b506842377396fedd3305b685c17ee

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