Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a573ad3c599501e…

MALICIOUS

PDF

46.7 KB Created: 2021-06-03 05:44:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: dda5c1af3150f11a47b7e92a9e823c48 SHA-1: b189715ff96eee9fc2a0c2b02bc1dc66b6ac5f13 SHA-256: 8a573ad3c599501ef6256b1abec8cb5a173e9d5c57fcc9446109ee5de5c89807
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 0.9748

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.online/app/406889139/daily-free-spins-for-coin-master-game-hack PDF link annotation
    • http://www.library.umbjm.ac.id/repository/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-coins-on-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/pokemon-go-free-money_GM1094591345.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/uprobuxcom-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50BE 24536 bytes
SHA-256: 0bb5652b2b0a0cd9ee03eb733bee23d88ec78a30aacf3ab7cfaae6a06ca219e7
font_01_sfnt_off00008889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8889 3204 bytes
SHA-256: b7fe42cb1da39e96c756399b3532633df029c1fbb3443b9e17d98df25c90dc65
font_02_sfnt_off0000938c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x938C 18308 bytes
SHA-256: b750d5a8b44caccc122b2ff8294eb9307e18e87e3916697a2a7f0c063c77f291

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