Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a3c43ff09e5fe0b…

MALICIOUS

PDF

37.3 KB Created: 2021-05-23 05:15:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 88c5d6a40984d6c519ad639ce6dde0ce SHA-1: edbca82958eecec997ace516e99534e294e8ad1b SHA-256: 8a3c43ff09e5fe0bb68a7545c4d94f62a969a280409b2a85e51b4bc31ba70df7
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and fake generator sites, masquerading as 'free game hacks'. The document body includes phrases like 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' and links to various game-related cheat sites, reinforcing the lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious download or redirection workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.xyz/app/479516143/minecraft-gun-games-free-game-hack In PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-free_GM479516143.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-free-robux-on-roblox-2021_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
stream_002_off000032fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32FD 28216 bytes
SHA-256: 6dccee9d8a57d3a55e05ea7f39a6baffef7b05a04b4abd9c45c047bc67a07d21
font_01_sfnt_off000071b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B6 17968 bytes
SHA-256: 8511888cd071b31a6773fc40a7c9fa25820a04ce1c2bff2e61827af067d413dd

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