Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bbfbda7b6af1e5b…

MALICIOUS

PDF

47.9 KB Created: 2021-05-19 23:38:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 16a546a644b97985bf0b68c33a896cf7 SHA-1: 719a006d5669468e5de5794e4eea6096024726bb SHA-256: 2bbfbda7b6af1e5b4dd1c56c93260c616d035d6ba65afeba89831b0c48ea0a52
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to websites offering game hacks and free currency, identified as malicious redirectors. The document body and embedded links suggest a lure for users seeking in-game advantages, which is a common social engineering tactic to drive traffic to potentially malicious sites. No scripts were extracted, but the presence of numerous malicious URLs indicates a high likelihood of leading users to exploit kits or phishing pages.

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/coin-master-free-coins-facebook-game-hack In PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/what-is-a-robux_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/gamesofficenet-hack-coin-master_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_off00004c67.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C67 24972 bytes
SHA-256: 6c0a7385a413446dfac7221227263c03b9f1415c72f7e05f3e1ec3393d50bff7
font_01_sfnt_off00008521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8521 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off000099ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99AC 18040 bytes
SHA-256: 84f206db0752fc1b1c3d9ee3ef2c899a5b2ff620242448cfed824ad49df6ef2c

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