Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f7b0d406ead63d8…

MALICIOUS

PDF

44.0 KB Created: 2021-05-14 16:45:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 04542e6c1df37ab8f58b35254459e1c3 SHA-1: 909f14bd106acfcee5c611e7d0d659b45cf8871e SHA-256: 0f7b0d406ead63d8dc0cdd01d930a465a809b0ab6a415c18d515d474f5a6bd12
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically advertising a 'free generator' for Coin Master, which is a common lure for malicious sites. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the embedded links and the nature of the lure suggest the document is designed to redirect users to potentially harmful content or further download stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-online-generator-for-coin-master-game-hack In PDF document text
    • https://bancroftandsons.com/images/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • https://bancroftandsons.com/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/roblox-points_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • https://bancroftandsons.com/images/facebook-coin-master_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-free_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-daily-free-spins-2021_GM406889139.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_off00004892.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4892 24548 bytes
SHA-256: ae2d2b18c9a4ac7f99a43ba04b499747245bda09146acd15b06a7dae8e5c678b
font_01_sfnt_off00008085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8085 2988 bytes
SHA-256: 35f8cc5e237084901e234141026567848daf7d7261a1fb48bde41da5bb7cdbb2
font_02_sfnt_off00008ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE1 17784 bytes
SHA-256: 579eb47dde417d62ca8d8cd139302366ea0c7f7e900a00e7dd67578edc48d912

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