Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dc76a7e18ee11f8…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 23:59:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 5712e5d0853bddf764a8a2b16a8b4f22 SHA-1: 95239821160e4dd9dec2eebb857935fc6d1e7024 SHA-256: 3dc76a7e18ee11f8223850e9865b27f8e1031f4a25b0f5139b246cf5090fdc37
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 0.9980

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 http://netcdn.tw/app/431946152/how-to-use-gamesense-roblox-hack-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-printable-roblox-cupcake-topper_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-usernames-and-passwords-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-a-youtuber-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-codes-to-hacke_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-accounts-passwords-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacking-esp-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-lua-scripts-for-cheat-engine_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-gear-on-the-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/sparereborn-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-no-voucher-no-money_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_002_off00002fba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FBA 22520 bytes
SHA-256: c60553b714ccc9ee44f8a1a6bd5f1ae5317bd7cbe40ccb09121461d6150f969a
font_01_sfnt_off000061fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FC 19080 bytes
SHA-256: 86de0f54eab7371151a5463b45f0e53407f64c0b400f683684f17c002304b2ec

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