Malicious PDF — malware analysis report

Static analysis result for SHA-256 470c5c2910edf367…

MALICIOUS

PDF

34.6 KB Created: 2021-06-20 01:17:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4581fbcee4381da996396ffac1183681 SHA-1: 1ff141e8c415b8ffb168c3c6d5ca5a4811ebe348 SHA-256: 470c5c2910edf36785046a728aee1d7d36ce35e74393ca6093c44cfd6f25d55a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one that redirects to known malicious infrastructure. The document body and embedded links suggest a lure for game-related cheats or currency, likely to trick users into downloading further malware or visiting phishing sites. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood of a phishing or malware distribution campaign.

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/479516143/minecraft-hacks-wurst-game-hack In PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/play-jailbreak-for-free-without-installing-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/code-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/is-tiktok-free-app_GM835599320.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hack-roblox-players_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-rape_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hacking-program-for-roblox-to-hack-accounts_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-online-cheat_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
font_00_sfnt_off000032c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C4 22384 bytes
SHA-256: 84ee2868981b8c2de4c02191dfc7316001225c07dfb8875cdea8bede4462aed8
font_01_sfnt_off0000649a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649A 18364 bytes
SHA-256: 521d9e21ddb37bcf50fca8719f17a590544ab37de3ab7ae08bd463770fa05be1

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