Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad18a160ac3bf9c4…

MALICIOUS

PDF

41.2 KB Created: 2021-05-20 02:31:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d2a23d115db66af04f04be3dfacc0861 SHA-1: 04d8d760405c2548a7f579b34a4bf6542afd95be SHA-256: ad18a160ac3bf9c4329ef5fbb20c5fc251186319616b616e3b116c5dc066b845
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/835599320/tiktok-followers-free-2021-game-hack PDF link annotation
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/pokemon-go-gameplay-free-online_GM1094591345.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/pro-pubg-xyz-uc-hack_GM1330123889.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/pokemon-go-free-username-and-password_GM1094591345.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/how-to-download-minecraft-for-free-on-windows_GM479516143.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_off00004690.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4690 24456 bytes
SHA-256: 2fcfc82b394285ba265d58d15723607979728a1cb316629a34fa984d670a0fa6
font_01_sfnt_off00007edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDF 18096 bytes
SHA-256: c625b936ee3f6711801d08f29bfb7079fb70013eaf0fe65e67be672ffa112feb

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