Malicious PDF — malware analysis report

Static analysis result for SHA-256 218c0d570647627a…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 00:40:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 86c4f00e0795fcc1b2d7f46f3a6cde32 SHA-1: b90f4ccb3c3a0a24b9121d2fa3db343ea2ad7973 SHA-256: 218c0d570647627a33a067c9a0e0031831183d43a78ecada9f45bd054ba614fa
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/free-coins-on-coin-master-generator-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-tool-v1-9-download_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-soins_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_003_off00004c85.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C85 24816 bytes
SHA-256: eed3a091e5bdeadb86031680692e8128d2cb21f6ca76eed90362c5d8a48f9bf2
font_01_sfnt_off000085cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85CD 17712 bytes
SHA-256: e8b1eba143f1d3c0478eece1d902ba9fd5ecbd562c4f2d9cad907c7e05d934a1

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