Malicious PDF — malware analysis report

Static analysis result for SHA-256 86cf7e460a874d4e…

MALICIOUS

PDF

35.6 KB Created: 2021-06-21 17:10:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 08416e58b657fd1f9718137b05aff9b4 SHA-1: bc1620b374429ac8713a47d7d572f54e5a5e9b57 SHA-256: 86cf7e460a874d4eec3af6fbc7836beb8514eb8a3841643145e6fc65f2b1c885
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks or free currency generators. The document body and embedded links strongly suggest a lure to trick users into visiting these sites, which likely host further malicious content or phishing attempts. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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/earn-free-robux-game-game-hack In PDF document text
    • http://technologicalsc.com/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/axe-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-dragon-ball-rage-stats-hack_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-trainer-hack_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/how-to-hack-other-peoples-inventory-in-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-hacker-2021-download_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-reaping-simulator-shards-hack_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/hack-para-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/how-to-hack-yourself-free-robux_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_off0000342f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x342F 22560 bytes
SHA-256: 4ef0f7ad59c368ac2f574959f4ac2837e6984c3a0410192a10ad6754bce3d170
font_01_sfnt_off0000666d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x666D 18976 bytes
SHA-256: 97263f42f8897a9271573273d2a63a445c3fa3435ddd12d1898a3b9f03df10f0

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