Malicious PDF — malware analysis report

Static analysis result for SHA-256 26130642dbb755ab…

MALICIOUS

PDF

45.2 KB Created: 2021-05-14 09:26:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c13be0d29156c7ae544933dda342ba52 SHA-1: a9f5fb2cdaeb333304eafc879ed51e067b3568ab SHA-256: 26130642dbb755ab87b9df0a828b579798b2ab4b5551112ae8121e4c9546dcfb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites that are identified as malicious redirectors, specifically promoting 'free generator' or 'game hack' lures. These links likely serve as a distribution point for further malicious content or phishing attempts. The ML classifier also flagged this PDF as malicious, reinforcing the suspicious nature of the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/how-to-get-free-cards-for-coin-master-game-hack In PDF document text
    • https://weddingcards-expert.tw/upload/files/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-robux-group_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/roblox-cp_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/best-hacked-client_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/minecraft-education-free_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/real-roblox_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004985.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4985 24700 bytes
SHA-256: 2184da3b687eb2b2ad41ae206a4084fdf5479894c85fcf07db1ae5e7575022ef
font_01_sfnt_off00008222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8222 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD4 19040 bytes
SHA-256: 546a81d89dae3aa4561661b2cfc7ce577e9ff41b4e46564e2e367004c49fcb60

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