Malicious PDF — malware analysis report

Static analysis result for SHA-256 b43adc586932fe8e…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 05:44:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 192d39a788c425a35fbb25e9737868db SHA-1: da89acd61176b1266af246295428f66104d03bc6 SHA-256: b43adc586932fe8e9db9be1269f0abe42375cb5eb0c5cc8270fb0b8d8d04eaeb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, one of which, 'https://netcdn.online/app/406889139/wwwcoin-master-free-spincom-game-hack', is identified as a malicious redirector. This redirector likely leads to a scam or further malware. The document's content and heuristics suggest a lure for game-related cheats or in-game currency, aligning with common phishing and scam tactics. No scripts were extracted, but the presence of embedded URLs and the nature of the lure indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/wwwcoin-master-free-spincom-game-hack In PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/how-to-get-tiktok-free-followers_GM835599320.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/roblox-verification_GM431946152.pdfIn PDF document text
    • https://www.kkaccessoriesuk.com/uploaded_files/userfiles/files/how-to-play-coin-master_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_004_off0000518f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x518F 25260 bytes
SHA-256: 5192452186f96a2a2820dd6560a159c8bae4e3a7469ac6335ff8531f5864755b
font_01_sfnt_off00008c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5D 18508 bytes
SHA-256: cac94fef17ce845b2202ff2e16c674c6fda982f28371fce468eb090e299a804a

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