Malicious PDF — malware analysis report

Static analysis result for SHA-256 2efcd3b2ec893286…

MALICIOUS

PDF

35.2 KB Created: 2021-06-30 05:31:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 993d409f270e22852d98347f72a608a4 SHA-1: a9d8fe79c1b40bcf3de11c7b3080ad8438206618 SHA-256: 2efcd3b2ec893286fb05e1368fba9691ad0c4f2e5745036fe7467c798e0a7eb7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a redirector lure, specifically pointing to a URL associated with game hacks and free generators. The document body also contains this URL, reinforcing the lure. While no scripts were extracted, the presence of a malicious redirector link strongly suggests an attempt to lead the user to a malicious site, likely for further exploitation or malware delivery.

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/roblox-skins-girl-free-download-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/code-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-into-roblox-and-get-builders-club_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/cool-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-fix-cheat-engine-66-roblox-shutdown_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/pubg-uc-india_GM1330123889.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-advanced-placing-in-bloxburg-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-de-robux-en-roblox-espaol-en-3-minutos_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-2021-legally_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-bloxburg-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-make-a-hacker-game-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-do-you-make-a-free-robux-game_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack-peoples-account-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roxpoes-roblox-exploits--hacks_GM431946152.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
font_00_sfnt_off000030db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DB 22616 bytes
SHA-256: de194962ed852bbae441e80af980d817ce34c9bad4969d9270301bd761268011
font_01_sfnt_off00006390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6390 19444 bytes
SHA-256: 34c2adf4c39b6d735bff1811d58c0c6d28a367dca0ea90f1e5c345b04046208d

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