Malicious PDF — malware analysis report

Static analysis result for SHA-256 a24bdf25a7b6f4af…

MALICIOUS

PDF

42.8 KB Created: 2021-05-11 18:59:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 52d62a36f241c8381420896f04f7e8cd SHA-1: 122543b8ad8d72dcc76ee75c766a00f61ccae0ff SHA-256: a24bdf25a7b6f4afab91cad5f6c1c560bb015b28ec7ada8d3f542ed7183e883d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising "free generators" and "game hacks". The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded links and the nature of the lures suggest an attempt to direct users to potentially harmful websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-spins-coin-master-facebook-game-hack In PDF document text
    • http://manfeld.dk/images/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-live_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/robuxfree-con_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-no-verification-no-download_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
stream_003_off00004bba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BBA 25008 bytes
SHA-256: 6840a09603c8b43b17e7778c2a8f8a20dfcd60c39c93e320d453a14c292cf69a
font_01_sfnt_off00008505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8505 18212 bytes
SHA-256: 50de993b58e9e37548682fab5b814d15972a3e6e828789899a8bd37e3a77ebbf

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