Malicious PDF — malware analysis report

Static analysis result for SHA-256 875fafdba678357b…

MALICIOUS

PDF

32.5 KB Created: 2021-06-28 13:47:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b7da1d414c2752d28496e21428a25c5 SHA-1: bfb73d403a690caded07cce6d1ff11fa2857e5ca SHA-256: 875fafdba678357b8f5a3f81dcd0842648f87c0212041d52a9524839031bbc30
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and currency to trick users into clicking malicious links. The document body and heuristics indicate it directs users to known malicious redirector infrastructure, likely to download further malware or phish for credentials. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-roblox-dlls-hack-game-hack In PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-hack-roblox-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/the-easiest-way-to-get-free-robuxgrayphiny_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-800-robux_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-game-free_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/hack-para-las-contraseas-de-roblox_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-gamepasses-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABB 21792 bytes
SHA-256: e55bcf512096bbc9d335c107df7e34587e4467914395693c8ac1a6a39c70765a
font_01_sfnt_off00005a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8F 18988 bytes
SHA-256: c510ed7f68763ef3184ffac8366d991bba820aa0a7a87f5c73e1c925d9f1d7f0

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