Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f42f2d334d96906…

MALICIOUS

PDF

41.9 KB Created: 2021-05-15 04:57:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2520274655998e6d07ca46fd0ab59df9 SHA-1: 07d8eb9a14da85ae4c75b7f48bb69e48ede8a885 SHA-256: 3f42f2d334d9690614a0969270d1a5dd0acbbd1d34c65ecb428aa53a8b055ddc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as game-related content like 'free spins' or 'game hacks'. The primary lure URL is https://netcdn.xyz/app/406889139/free-spins-link-in-coin-master-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection, likely intended to lead users to phishing or malware download 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-spins-link-in-coin-master-2021-game-hack In PDF document text
    • https://itv-grabungen.de/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://itv-grabungen.de/images/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/abd-roblox_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn 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_off00004866.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4866 24508 bytes
SHA-256: 7aeb6b493136dd80304b3b6eb935926bba2c0daabbf28aedef94ba381b63c45f
font_01_sfnt_off000080b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B7 18456 bytes
SHA-256: 8f5be0faf1f43547a4f613946690c49555a623d75ecb5c591eda2449b2cabce1

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