Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec9cc5ef990e2c6…

MALICIOUS

PDF

43.4 KB Created: 2021-06-14 00:36:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a5458addff9fc8911f6d9e8ce21e93dd SHA-1: d47e1d212d9c391abe35f55a9ad429183c15738d SHA-256: bec9cc5ef990e2c69d8d9abab8638640653d953f01620d317015c0c5d2bdde45
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that point to known malicious redirector infrastructure. The document body and heuristics indicate a lure related to game hacks and freebies, designed to entice users to click through to potentially malicious sites. The primary IOC is the redirector URL, which is likely used to serve further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/hack-for-trasure-hunt-simulator-roblox-game-hack In PDF document text
    • http://ines.co.rs/images/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://ines.co.rs/images/mc-hacks_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/how-do-you-get-robux-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-cheat-engine-game-shutdown_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/dbz-rage-roblox-cheats-for-unlimited-power_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/get-free-robux-roblox-games_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://www.roblox.coIn 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_off00004947.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4947 25920 bytes
SHA-256: eafcf0f54d135f809af46384ccf0b0014e9c77fd09efb4808dce56f8a1469ce1
font_01_sfnt_off00008565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8565 18968 bytes
SHA-256: 3aac21a015edb338f16f906741eb8c6bc4b9dc78c0b8264dcec4139629627ba5

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