Malicious PDF — malware analysis report

Static analysis result for SHA-256 284c92dd4a9b3af8…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 16:15:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 49ce8f3df997949b59288e8b62ec668b SHA-1: ac3c26b8f6810eadf964eef5697513ac9de45b1d SHA-256: 284c92dd4a9b3af8b22d5d087dfe5e7bbe822dcd9359d4d3e05ca08470341f95
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links that are identified as lures for game hacks and free in-game currency. The primary link, http://netcdn.tw/app/406889139/https-iosgodscom-topic-20214coinmasterhack-game-hack, is flagged as a high-severity redirector. The document body and heuristics suggest a social engineering tactic to drive users to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/https-iosgodscom-topic-20214coinmasterhack-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-in-one-second_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-group-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-free-dominus-promo-code-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/a-hack-to-open-the-applications-on-roblox-got-talent_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hack-site-robloxcom-robus_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/kazok-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-pc-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/get-free-get-rekt-roblox-shirt_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.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
stream_002_off0000308d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x308D 22424 bytes
SHA-256: 2c957b4620bc2460df1bd0b00f6597349c3445e201d077b88cb6e3d5199bfa56
font_01_sfnt_off0000629a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629A 19244 bytes
SHA-256: 08ea946be5fb008c0d7bd008b3af5890e72ea8b0061f58924028e5c31f25d00a

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