Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c3b8ab67e1e1888…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 05:27:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 117ca950c714be94f3d1e5e1c585589b SHA-1: db761325d052b583a1d0241eefbd9ffe6b5cddb1 SHA-256: 0c3b8ab67e1e18883f49987c55ba406bb0f698ee9e27c91913825a25af85f0d7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary link, https://netcdn.online/app/1094591345/how-to-get-free-pokeballs-in-pokemon-go-game-hack, is identified as a critical threat. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/1094591345/how-to-get-free-pokeballs-in-pokemon-go-game-hack In PDF document text
    • https://dolphintour.vn/images/uploadsfiles/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/get-free-robux-without-survey-or-download_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-hacks-for-coin-master_GM406889139.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
stream_004_off00005097.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5097 24644 bytes
SHA-256: 6c2c98946fa634109c8d6a048015509292f14266ef0f840d71d7e853a3c17cf0
font_01_sfnt_off00008900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8900 18568 bytes
SHA-256: f0a469e2b51db9349bf40bcf8fc8c44ad0ec8c79745cd51525627966c676374b

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