Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a893ecb39bd8368…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 00:40:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 728899bfc0f72ddf5098ac66432316cf SHA-1: 146b0edc9399b7df333d1e8b24773bcc4d0e2a10 SHA-256: 1a893ecb39bd836805d23d2239391f4b186103d5be6d262a4b1af633b39fe374
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 0.9980

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/406889139/how-to-win-attack-madness-in-coin-master-hack-game-hack PDF link annotation
    • http://library.stipjakarta.ac.id/etd/repository/free-code-robloxcom_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-no-scam-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hack-para-roblox-2021-pc_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/tiktok-free-view-followers-app_GM835599320.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hair-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-magical-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-free-play-no-install_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-fly-hack-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hacks-for-roblox-the-purge_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hack-robux-using-google-chrome_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/account-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-free-roblox_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_off000033fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33FD 23104 bytes
SHA-256: 2d52dc21b7165708af70e64d2a492ae10dba016482a5fec870d8b9656f9b862a
font_01_sfnt_off0000681c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681C 18540 bytes
SHA-256: 18b2b198db32dc7e7e623373eb0fd3d036bd651e1aea8149d070f329f11c896b

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