Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1aeccca8f77e4b…

MALICIOUS

PDF

34.6 KB Created: 2021-06-28 04:55:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c28d65ded4deb1f26c38086af3311d3f SHA-1: 6c6113bbb7b2d6ee3daf16b139d0ad262092421d SHA-256: ea1aeccca8f77e4b53346759fefb86c599559d5ed2cf66dfa9dc74acac55a338
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'game hack generator' which redirects to malicious infrastructure. The ML classifier also flagged this PDF as malicious. The embedded URLs and the document body content strongly suggest a phishing or scam attempt to trick users into visiting malicious sites.

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/injector-hack-for-roblox-game-hack In PDF document text
    • https://htdvn.com/public/upload/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/hacks-for-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/roblox-hack-android-1-com_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-promo-codes-december-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-island-in-roblox-bubble-gum-simulator_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/robux-hack-that-saves_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/robux-rewards_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/hack-game-tool-for-roblox_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/bucks-free-robux_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_off00002f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3C 22696 bytes
SHA-256: d98130a4116de980f67330557e4db2780053d30f04171c04c2becb25e70a2eb7
font_01_sfnt_off0000621a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621A 19112 bytes
SHA-256: 2decad9e96344d7f8202db3bb1d066211aad21ceccab2df9602eafe970b050c1

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