Malicious PDF — malware analysis report

Static analysis result for SHA-256 67da4d1a08e6c334…

MALICIOUS

PDF

43.3 KB Created: 2021-05-12 04:36:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: caecd9dd401ec84a88579e88eaadbbc9 SHA-1: aa67a6505a55700d167ecb6d89dda0c3772f3d1a SHA-256: 67da4d1a08e6c33456c40665d22911a7288c883cd7b24a08bbdf10d421a6e3bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games. The document body, though partially corrupted, contains references to these lures and embedded URLs. The primary function appears to be redirecting users to potentially malicious sites that likely host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/heroes-online-roblox-game-hack In PDF document text
    • http://bit-sky.com/images/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-hack-someones-roblox-account_GM431946152.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_003_off00004697.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4697 29640 bytes
SHA-256: 79e909f8c1bdfd4c09f734e5c2b1c77cd67793fbb1f0ce85ec2bbcbabf75e6ea
font_01_sfnt_off0000883b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x883B 17904 bytes
SHA-256: d2079bf99977f163cee1c7bcc2927f6b86f82a10be6ceb2207c7e7d42ad6dc1b

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