Malicious PDF — malware analysis report

Static analysis result for SHA-256 80cfdcae2d0e658f…

MALICIOUS

PDF

33.9 KB Created: 2021-06-25 20:52:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2ace1ba2f5b0892e4a530fc1bcb13a78 SHA-1: dc6f28a32e9f4e606d74b907ef58cd78e156941f SHA-256: 80cfdcae2d0e658fbb49086ad4880e4703b8a1b1968d6dbd30e68e1396c4a04e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a redirector hosted on 'netcdn.co' and other domains, masquerading as a 'free generator / game hack' for Robux. This is a common lure for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URLs and heuristic firings indicate a social engineering attack.

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/claim-gg-earn-free-robux-game-hack In PDF document text
    • http://amcoeur.org/images/roblox-hacks-for-overdrive_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/ww-robux-hack-me_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/instalar-hacks-para-counter-blox-roblox-offensive-en-espaol_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-hack-roblox-players-on-ipad_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/new-dtfb-test-server-roblox-hack_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-apk-modapkdown_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-code-roblox-card-with-no-risk_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/which-games-on-roblox-you-should-fly-hack-in_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/can-you-get-free-robux-on-your-birthday_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-no-survey-xbox-one_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-roblox-gameplay_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-hack-for-robux-2021_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/prison-life-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-free-robux-group-funds_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-get-anything-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-be-a-hacker-in-roblox-prison-life_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_off000030ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AC 21408 bytes
SHA-256: 81147fb154cb243832c3e48955dc780a881e28cfe54c28e862d87391f5dbba01
font_01_sfnt_off00005f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2E 19168 bytes
SHA-256: 605893c8bb55a8176cdd4f08bab929113a18779fcb345838eba4c5d2b665a2af

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