Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdb969edc129904b…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 08:58:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c986df6e2fd04ca6705c71fcf4f0b033 SHA-1: f4dd8de129714409bf087c82c0b05753c3153fe2 SHA-256: bdb969edc129904b680977c09b55af141ec983f8de1ad911770c5928ceea6199
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to trick users into visiting scam websites related to game hacks and free currency. The presence of a malicious redirector link and the ML classifier's high confidence score indicate a malicious intent. Although no scripts were explicitly extracted, the document's structure and embedded URLs strongly suggest a phishing or scamming campaign, likely delivered as a spearphishing attachment.

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/freespinandcoin-blogspot-coin-master-game-hack In PDF document text
    • http://gornjastubica.hr/files/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://gornjastubica.hr/files/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://gornjastubica.hr/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/minecraft-bedrock-for-free_GM479516143.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f9c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F9C 25916 bytes
SHA-256: cc6ce407121263b3e5d888fa08e17ef0489d1b806d253976c93909bb19d0670b
font_01_sfnt_off00008a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5C 18636 bytes
SHA-256: 2931d6284dbf135659b140410c03fb6a10ec8e1a87db333076a10ec3316c1554

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