Malicious PDF — malware analysis report

Static analysis result for SHA-256 a57d75fa482691fa…

MALICIOUS

PDF

35.5 KB Created: 2021-07-01 02:59:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: acddbb48ba9cc1dbb773e34caadb9f6d SHA-1: 62812845505650526a035a70e75fd4fcead73a1a SHA-256: a57d75fa482691fa9fdc921d9f90673828c203679d44f61942a62e208275adab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure related to game hacks and free currency, directing users to a malicious URL. This URL is flagged as a known malicious redirector, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-clothes-in-roblox-catalog-game-hack In PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/how-to-get-rs-on-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-with-codes-to-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/how-too-hack-roblox-calos-amin-house_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/oprewards-roblox-free-bloxburg_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/roblox-2021-hack-banners_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/pokemon-go-free-3-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/how-to-get-a-free-thumbnail-on-roblox_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3488 22404 bytes
SHA-256: 997c9faf6bd543d42e92c5ece2975c7d02a2ad52b5de3213dd64ea2d57ae9cc0
font_01_sfnt_off0000665b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665B 18920 bytes
SHA-256: 891b3718a7853f189362358a9fb84c0f7d7a1039039e199e4d3b5e27daad6c19

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