Malicious PDF — malware analysis report

Static analysis result for SHA-256 179970dde59866d6…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 06:04:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 91d22a5a2e7bcb5d3561d4d1dfcf0109 SHA-1: a850409cf071d079b89bda5cb4875c0248a74de5 SHA-256: 179970dde59866d6ca756406ed40a5beae7a8ec58eb59a664f8922599925d388
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for 'free Robux' and game hacks, directly linking to a suspicious URL. This indicates a social engineering tactic to trick users into visiting a site that likely hosts malware or phishing content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-robux-that-actually-works-2021-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/how-to-hack-roblox-accounts-2021-may_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/getting-tons-of-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-money-in-heists-beta-updates-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/2021-non-patched-roblox-exploit-free-heck-yeah_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-hack-download-pc-dungeon_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/master-coin-free_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hackear-roblox-escape-prison_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robux-hack-ad_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/only-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/khaos-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/fidget-knot-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robux-scam_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
font_00_sfnt_off00002f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F41 22484 bytes
SHA-256: da06bbb65990ce9b65574455d67502cc0926a74ff5a73fa984e8efe8054a51c4
font_01_sfnt_off000060fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FA 20008 bytes
SHA-256: 8708610d65edee27054ce301a9bd75c7c559fd6231599c341fc0984ebcbede77

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