Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfa7cc87825ff875…

MALICIOUS

PDF

35.3 KB Created: 2021-06-23 02:32:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0a7844479b1969624f46e3b98eead5bb SHA-1: d736416a02f11fcf94492ce3b275ae6d7b1faf91 SHA-256: dfa7cc87825ff8751bb3fa00d062855eee9539e6a308d4705992e58961773e7e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as a 'free generator / game hack'. The document body and embedded URLs promote lures for free game currency and hacks, indicating a phishing or scam attempt. The primary malicious action observed is the redirection to the malicious URL, likely to deliver a secondary payload or lead the user to a fraudulent site.

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/how-to-get-free-robux-useing-inspect-game-hack In PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/roblox-free-download-ios_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/free-10-dollar-roblox-card-codes_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/red-boy-v2-jailbreak-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/coin-master-free-spins-only_GM406889139.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_002_off00003029.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3029 23248 bytes
SHA-256: 5b17b056a7b49a3db94457005fcc8edd3ea35ba0a40609be7e182a866b4a056b
font_01_sfnt_off00006469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6469 19280 bytes
SHA-256: a752d0644928035879af26d185bf807c3eb9358c40b2242a9d8a5370ee98d14a

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