Malicious PDF — malware analysis report

Static analysis result for SHA-256 42bf055984039eb9…

MALICIOUS

PDF

33.8 KB Created: 2021-06-19 17:52:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 870645bd2cf4449d3d848bde37efbc2d SHA-1: 69cd5842b55a8fb92d22e4c372cf9922680d11a1 SHA-256: 42bf055984039eb9ced9c0eb66c0d663df00d840eff0698e2ccca5f68597d89a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, indicating a phishing or malware distribution attempt. While no scripts were explicitly 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 0.9980

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/roblox-free-ss-game-hack In PDF document text
    • http://library.unissula.ac.id/fk/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-hack-roblox-jailbreak-on-ios_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-card-codes-not-used-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hack-mod-apk-de-roblox-2_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/2021-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/static-moonactive_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-shirt-template-free_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002edc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDC 22204 bytes
SHA-256: 7a8d98f024a7d1c1604d74d4ab4f88948d26ff87538fcb326c74c9d39ef7dbd6
font_01_sfnt_off00006012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6012 18652 bytes
SHA-256: b953bda81e8453c0b24d6d9d44d29a5efe1930aca9fdb302195bcffc866474a7

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