Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b7f3acf9ff0c453…

MALICIOUS

PDF

41.8 KB Created: 2021-05-15 07:03:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 58cafc3bb4f3bd8b7d4f98c84be65cdd SHA-1: d402b5a35214e650d291fdf2f59c4a58c4551603 SHA-256: 5b7f3acf9ff0c453627bb909595528c7ada2e143ce9c7507396b3a09bbbc9471
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure, disguised as a lure for game hacks and free spins. The document body and embedded URLs suggest a social engineering tactic to trick users into clicking malicious links, likely leading to further malware downloads or phishing pages. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-23-march-2021-game-hack In PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/coin-master-link-app_GM406889139.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/roblox-c9m_GM431946152.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/toolbox-mod_GM479516143.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/free-vip-roblox_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_003_off000048e0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E0 24096 bytes
SHA-256: e3c22882395dd382d8418a25a56dd2272116613497ec8d12d7f81245dc844efd
font_01_sfnt_off00007fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC2 18628 bytes
SHA-256: ee10560f037836a310effba06f8e2a452031a98d457cdddaa4693c2fbbf13476

Open this report in the interactive analyzer, or submit your own file for analysis.