Malicious PDF — malware analysis report

Static analysis result for SHA-256 34e46f95f0aae379…

MALICIOUS

PDF

35.1 KB Created: 2021-06-26 09:02:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 2017692afbcf7dcedf319271bffd9465 SHA-1: 69a070450b515f85e93b5929ab85135c83b40781 SHA-256: 34e46f95f0aae379f20117a30ba541b6969d27e8219bd5b3106bd461e74a4478
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple embedded URLs designed to lure users with promises of free game currency or hacks. The primary malicious URL, http://netcdn.co/app/431946152/free-robux-cards-that-have-not-been-used-game-hack, is flagged as a malicious redirector. The document body reinforces this lure with text related to 'Free Robux Cards' and game hacks, indicating a phishing or scam attempt.

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/free-robux-cards-that-have-not-been-used-game-hack In PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/what-free-program-for-roblox-shirts_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/fastbucks-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-booga-booga-fly-hack-2021_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/cheat-roblox-lumber-tycoon-2-teleport_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/nike-roblox-free_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/500-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-robux-no-wait-proof_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/pokemon-go-free-gucci_GM1094591345.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/minecraft-windows-10-hacks_GM479516143.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
font_00_sfnt_off00003234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3234 22144 bytes
SHA-256: 7fead49930c3d76b4a2b61527c8a5c838a09ce38c580e8f690d1a13b6c064f55
font_01_sfnt_off00006365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6365 19276 bytes
SHA-256: f5c255e96e6a75e8028ded14daec8cfde8ffe658cff0d3714cf0b8a2fbb73429

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