Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e3b9405689e4a8…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 00:12:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7ca73f24dc37e6a290777b44435e1b72 SHA-1: 9644777375be60c4b0fcc072583b59da787c685d SHA-256: 96e3b9405689e4a866b3b80027129cdb0abf421bf3d9b82f2129a5356e10a4a9
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/coin-master-free-coins-game-hack PDF link annotation
    • http://knjiznica-oroslavje.hr/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-make-hot-sauce-roblox-hack_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/robux-best_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/roblox-robux-free-no-hack_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-robux-live_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/pubg-uc-midasbuy-pakistan_GM1330123889.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-spins_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/noob-invasion-roblox-get-free-kills_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-t-shirt-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
stream_002_off00003199.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3199 23368 bytes
SHA-256: 8989d4917f27377834bd9defc742caccf753f434aa48384ecc47894ab9d167dc
font_01_sfnt_off0000661f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661F 17996 bytes
SHA-256: 2ec206c530faa3d40eac36f14655b3e9b935e9ff12c648634e177d5bc9421463

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