Malicious PDF — malware analysis report

Static analysis result for SHA-256 559dea5cff0f2ba0…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 20:43:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a32bd4cbd8605de3053915d70a09c79f SHA-1: 5d6b51b491c76df49e018e53045ce8939873b647 SHA-256: 559dea5cff0f2ba03aa3b0cf93dff49549ebb7f67e5389650013b013a8e8e5ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically advertising free game hacks and generators. The primary lure URL is http://netcdn.tw/app/479516143/minecraft-coins-free-game-hack, which is flagged as a malicious redirector. The document body and heuristics indicate a lure for game-related cheats, likely to deliver malware or facilitate phishing.

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.tw/app/479516143/minecraft-coins-free-game-hack In PDF document text
    • https://creationegyptco.com/userfiles/files/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/roblox-egg-hunt-2021-hack-script_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/how-to-hack-into-a-account-in-roblox_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-strategy_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F25 22628 bytes
SHA-256: b9a3dd2a788910b3341ffe6434b4c5c98caef252adb01bdfa68dd20a699d329d
font_01_sfnt_off00006198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6198 17996 bytes
SHA-256: 57addac7b62f6982da03a34d469d6734b49e3a67e494fbb995a28ec062f8da05

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