Malicious PDF — malware analysis report

Static analysis result for SHA-256 740b93784b0f0b38…

MALICIOUS

PDF

44.2 KB Created: 2021-05-12 09:48:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 6ac7afd83612633be6e8398f635a4210 SHA-1: 7e125983edc557a99582c8a233488159bd29bb44 SHA-256: 740b93784b0f0b38788e623c8ce20a51768926bcdcc9f14af5e12093713824d3
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 0.9648

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/479516143/minecraft-education-free-game-hack PDF link annotation
    • https://weddingcards-expert.tw/upload/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/roblox-cp_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/wurst-115_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/haktuts-coin-master-free-spins-2021_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004942.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4942 24960 bytes
SHA-256: be99b8b381daf00399b72a5ae3e441d46f2187f479ef79d08a5ef3bc8471efc7
font_01_sfnt_off0000816c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x816C 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1D 18024 bytes
SHA-256: 50b2d5ff22f0b3ffa840834f12cbec9953eabd3c4e347b5eb6eb3aff22325aed

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