Malicious PDF — malware analysis report

Static analysis result for SHA-256 915e66a489920f5b…

MALICIOUS

PDF

37.7 KB Created: 2021-07-01 13:23:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a118b133dfc9958a2e90f7ef0610d0ea SHA-1: b07ac77ddf5fc81694f6e7fb750223315aaedc57 SHA-256: 915e66a489920f5b2f0158fb9179d28f04de156f3145bd3e5c1b4f3b912e353f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector at http://netcdn.co/app/431946152/roblox-destruction-simulator-hack-2021-game-hack. These links are presented as "game hacks" and "free generators," which is a common lure for phishing and malware distribution. The document body, though partially corrupted, contains references to these lures and the authoring application suggests it was generated programmatically, likely to host these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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/roblox-destruction-simulator-hack-2021-game-hack In PDF document text
    • https://planetzoe.hr/files/noclip-roblox-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/realhack-for-roblox-real-coding-hack-for-robux_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/robux-giver_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-get-free-robux-fast-and-easy-no-survey_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/roblox-game-snow-shoveling-simulator-cheats_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://planetzoe.hr/files/20k-robux-accounts-free_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/bacon-do-you-want-free-robux-buur_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/building-games-like-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/how-to-hack-someone-roblox-profile_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/why-tiktok-free-view-bot_GM835599320.pdfIn PDF document text
    • https://www.planetzoe.hr/files/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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_off00003a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A25 22440 bytes
SHA-256: 380e1f1aaa49d493d01f8128044bb3b14b817a13d6f6f2055a2ea21e7fd39be9
font_01_sfnt_off00006c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C26 19852 bytes
SHA-256: cabddab454e8ac989c14938615cd6495d571f1a27f8ea81f5c1b6d54cc103356

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