Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac670897d520b42c…

MALICIOUS

PDF

45.2 KB Created: 2021-06-02 23:38:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8b6464c0b543a33bd65d6779bad3d70f SHA-1: 668435341bd6525b550569051f062044a74df751 SHA-256: ac670897d520b42c39689fa8bbaa5442d6fe87d09459206345194a2f6721f735
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-account-roblox-2021-obc-game-hack PDF link annotation
    • http://cepobajodeva.com/images/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/pubg-uc-earning-app-2021_GM1330123889.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_004_off000053b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53B5 25016 bytes
SHA-256: d981bdab4a2458f04b9d941a2772b7a9db202dccfc22627a467217055e83052c
font_01_sfnt_off00008d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2E 18596 bytes
SHA-256: 001b9ab9bd27292db0f01def39a307acdd667c02407d273e803a47ac1681c897

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