Malicious PDF — malware analysis report

Static analysis result for SHA-256 6af9089a91f58880…

MALICIOUS

PDF

34.4 KB Created: 2021-06-28 18:30:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5b6d33637b19496f2e82e986ae8c01d5 SHA-1: ab13c3890954996b65da954f2ed3d746d6929c81 SHA-256: 6af9089a91f588808e986666cb0c595a60ce7c808f30b7bcc6217e16ba59756a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as generators for free game currency like Robux. The primary lure is 'free-robux-t-shirt-game-hack' hosted on netcdn.co, which is flagged as malicious. The document body and embedded URLs reinforce this theme, indicating a phishing or scam attempt designed to lead users to potentially harmful websites.

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/free-robux-t-shirt-game-hack In PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-robux-hack-glitch_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-roblox-accounts-with-robux-december-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-animation-roblox-june_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-robux-202100_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-stuff-catalog_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/counter-blox-roblox-offensive-cheats-download_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-place_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/dragon-ball-n-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-do-you-get-roblox-builders-club-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/press-one-button-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/do-free-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/esp-hack-roblox-pastevin_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF5 22580 bytes
SHA-256: ccad9143253e61663e37a0e542e7ed484bee422caea2fead998b75e20191ff63
font_01_sfnt_off00006120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6120 19104 bytes
SHA-256: 92e085f2d190f452385842015a0fa7593d1387de6d3f1377a44fc89e0b64e86c

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