Malicious PDF — malware analysis report

Static analysis result for SHA-256 37bca1decf59e20b…

MALICIOUS

PDF

43.9 KB Created: 2021-05-14 18:10:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: dc8f0f4200a3dffd535e377a32561e85 SHA-1: 7330eb9ea1c0e36dbdd10b21805a0d49a6402e14 SHA-256: 37bca1decf59e20b787db80e45487b2f27b966cdd18eb155ab188775c752a631
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures for game hacks, indicating a phishing or scam attempt. The embedded URL `https://netcdn.xyz/app/406889139/cone-master-game-hack` is specifically flagged as a malicious redirector. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content.

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/cone-master-game-hack In PDF document text
    • https://bancroftandsons.com/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • https://bancroftandsons.com/images/withdraw-robux_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/robux-generator-com_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://bancroftandsons.com/images/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-home_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048e9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E9 25064 bytes
SHA-256: ac7c6b1df1383e3dee79c4b8f4be110ee02da632767f97899ae2d9348e5e7ce9
font_01_sfnt_off000081b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B9 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5B 17428 bytes
SHA-256: 45c4e899866d0d24dcae3cea52e6ee867e16b7903319074fc523b8217c98ba84

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