Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a898a378d26063…

MALICIOUS

PDF

43.0 KB Created: 2021-05-11 17:05:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: ffcee6d64ec54675ca4745631b6dc4ed SHA-1: 1db6086addfcc7aaf416f7f789401b7f2ccba54c SHA-256: e2a898a378d260636d9eeb5a2f972b8ba7737dbb8d3a51f4da235820b1dfca93
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-hack-online-without-human-verification-game-hack. The document body and embedded URLs reinforce this lure, aiming to trick users into clicking through to potentially harmful content. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/coin-master-hack-online-without-human-verification-game-hack In PDF document text
    • http://schmittmusic.de/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://schmittmusic.de/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • http://schmittmusic.de/images/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/www-robux-com_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://schmittmusic.de/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-com-real_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_off0000499b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499B 26068 bytes
SHA-256: debbe4e2f334c2840482f91fed48d28cb2067a6a8af3110f6b986c5a7993629e
font_01_sfnt_off000084a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A1 18688 bytes
SHA-256: 4aaaba9fe6ed58f9b8b1a0433af0e5366d33adc18d760eeacae6851e704aacd8

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