Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7d98392549d0b70…

MALICIOUS

PDF

33.4 KB Created: 2021-07-05 02:49:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e96a119cfac74c9ff28c035f1de528c5 SHA-1: 3f63aee1dbc1b114deadc2541c668258afa4ad18 SHA-256: a7d98392549d0b70639ecfdc12ea05ebac648c768f0fb9548351e040c1030ce7
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/479516143/minecraft-java-for-free-game-hack PDF link annotation
    • https://pn-tapaktuan.go.id/pustaka/repository/free-roblox-account-premium-generator_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/are-free-robux-sites-safe_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/roblox-free-hats_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-mobile-no-verification_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/delta-roblox-hack-buy_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-2021-november_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/pokemon-go-free-7km-eggs-july-2021_GM1094591345.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-no-human-verification-jeuxvideocom_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-be-sans-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/dance-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-games-in-roblox-100-real_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/roblox-hack_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/roblox-genuine-hack_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/roblox-its-free-sparta-remix_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/zombie-attack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/descargar-hack-unu-para-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FED 21752 bytes
SHA-256: 219844e0d1fc44c8cfb6b42e68fe31fa7b1f1ba8ba4250a6a8b2e2a23aada1dc
font_01_sfnt_off00005fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA4 18276 bytes
SHA-256: 68849f4d63324190072240a7063db5b1f9739ca1319a3b9e65ce22385324d153

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