Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9ab0ab94200ad23…

MALICIOUS

PDF

47.7 KB Created: 2021-05-14 15:03:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 65107010de44ad3fe743e230ce889919 SHA-1: a553e6d5b6f3513a085e52d0504be1ceb5785ab1 SHA-256: e9ab0ab94200ad23e6084f5adab1bf86419d7998138e4dbad78e8db94f7167ee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a lure for game hacks and free currency. The document body, though heavily obfuscated, contains references to 'free spins coin master links' and a URL that aligns with the heuristic findings. The presence of embedded URLs and the ML classifier's high confidence further support the malicious nature of this document, likely intended to lead users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/free-spins-coin-master-links-thursday-november-28-2021-game-hack In PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-font-free_GM431946152.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/village-coin_GM406889139.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004f52.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F52 24972 bytes
SHA-256: 93a266ac53d9d67f981dd24ec52fb59b1e3d81c85dd883ddb66e1b1935e0f5b2
font_01_sfnt_off000088e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E0 2988 bytes
SHA-256: 2e674c500c16b8ff43463641e8cc5cf60d02ba3d2aee1a9e41835fd9787bc79e
font_02_sfnt_off0000933c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x933C 19860 bytes
SHA-256: d63300f936d8bb545b77e0b0c2e21733cc6fa46b1c79ade6db784861823ff386