Malicious PDF — malware analysis report

Static analysis result for SHA-256 56d42c9144317636…

MALICIOUS

PDF

41.4 KB Created: 2021-05-12 17:05:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2088283ad39ea5dc74ced3057adf547d SHA-1: 8e0fb6a4c4c601810c0a7835b7b5df5d22f96dc9 SHA-256: 56d42c9144317636e96b9280e65ac387a400b8ae439f080a64213b6273553412
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/spin-coin-master-game-hack PDF link annotation
    • http://pianoservice.com.ua/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://pianoservice.com.ua/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://pianoservice.com.ua/images/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://pianoservice.com.ua/images/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://pianoservice.com.ua/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-gold-cards-in-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_003_off0000479c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x479C 24828 bytes
SHA-256: cc4f965d9322d6eb42f595e43df84b83f2f9fd68f697032945bf8ddc0cddc93d
font_01_sfnt_off00008114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8114 17724 bytes
SHA-256: a288a8875d4658f6069a8caac4ff820547a50f75967c18edc494040e7262f101

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