Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a644dd32e3cafb1…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 21:31:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c17ce243dbbdd4e5e2aab02d6a073775 SHA-1: 579e881323c8655d55be84bf01b407d6b2e56780 SHA-256: 1a644dd32e3cafb1f288cb35e60631eda0f84e150c524bd0d01801adcef171e2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks. The document body and embedded URLs reinforce this theme, suggesting a phishing or scam attempt to drive traffic to potentially harmful sites. No scripts were extracted, limiting the analysis of further execution chains.

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/people-hacking-roblox-game-hack In PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/robux-hack-2021-on-phone_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/build-to-survive-zombie-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-robux-for-roblox-yolasite-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-free-character-maker_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-how-to-get-free-robux-2021-hacks-no-scam_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-free-draw-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-zombie-rush-free-online_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-to-hack-roblox-to-get-admin-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-robux-may-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-to-get-free-robux-without-verification-on-ios_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/wurst-18-9_GM479516143.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_off00003271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3271 22480 bytes
SHA-256: 9b8ca62ed3f63861fa3f42a6c4adf1ca3117b668ecfbc5581a7836ca402bef89
font_01_sfnt_off000064a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A0 19104 bytes
SHA-256: 280cf12246317a70e4a2d313ff18afec2fec7662128f9b3f6cca709e2278630b

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