Malicious PDF — malware analysis report

Static analysis result for SHA-256 743beba42de583fe…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 13:11:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4d2fd499a1a60dd9bfd98192087a7e9e SHA-1: d8ef845c402b1a0ae650c44d9c7c07ff56e68c01 SHA-256: 743beba42de583fe7687eb384df1ae8942c4729d0d458cdf6800d4ee23467b77
122 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 0.9864

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.online/app/406889139/need-free-spins-for-coin-master-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/robux-prices_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-can-you-get-free-robux_GM431946152.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_004_off000051c3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C3 31220 bytes
SHA-256: 7649fa97557255deba70cbc2b1bd96cb5f07525f89dfa5aca991828b81fcef38
font_01_sfnt_off000092ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92AC 18060 bytes
SHA-256: f5afe9341e435eaae5b93957743f0cc95999c7a361f3d67d13bd26335a6563d8

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