Malicious PDF — malware analysis report

Static analysis result for SHA-256 7901f6bf4d68e4e9…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 10:53:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 76e06392554186cadc581dabde89f12e SHA-1: 505af1de64af3054e53949d4d66926a23cc33384 SHA-256: 7901f6bf4d68e4e9734a3662c76a8351699e652caac3b65c8af14dc29ca98ef6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary malicious URL identified is http://netcdn.co/app/406889139/coin-master-free-spins-blogspot-game-hack. The presence of embedded URLs and a visual download button lure suggests an attempt to trick users into navigating to malicious sites, likely for credential harvesting or malware distribution.

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/406889139/coin-master-free-spins-blogspot-game-hack In PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/play-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/how-to-hack-roblox-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-got-talent-hack-piano_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/how-to-hack-in-roblox-2021-may_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/hack-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-ban_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_off0000310d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310D 22724 bytes
SHA-256: 53d968c192a413e3ece935ef0a4ada291ed3b113138eff5e29a89a320634f588
font_01_sfnt_off0000640a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640A 18464 bytes
SHA-256: 05a87c5e5a55dd1cacb71415224dc1225f286447460dff7243b727236e2d7549

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