Malicious PDF — malware analysis report

Static analysis result for SHA-256 44b919932fbd7c2c…

MALICIOUS

PDF

34.2 KB Created: 2021-06-26 01:44:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 47ca32eb5d91b111d7485918da55459b SHA-1: 20cca1086c824ae4d9bb8586205fccb6d19adddc SHA-256: 44b919932fbd7c2c301144fe3e492784f5807da67ff11ff397c63f40ba441828
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.co/app/431946152/free-roblox-cards-no-survey-no-download-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/can-you-use-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-martial-arts-battle-arena-cheat-engine_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-stuff-on-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/master-coin-hack-app_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-roblox-account-genirtor_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-hack-deutsch-auf-pc_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/robuxglobalcom_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-cheat-engine-dragon-ball-rage_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/pubg-uc-download_GM1330123889.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/rbxraincom-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/jailbreak-hack-roblox-script-pastebin_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-codes_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_off00002e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E7C 22016 bytes
SHA-256: 15678a1e8d7806e9bb7c923cdd47ab3da89c5f9e39d6211a30929bbbe08a4ffb
font_01_sfnt_off00005eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEE 19592 bytes
SHA-256: 414f398a445f68c35d9e662460bc28095dce7b19ea29b9236e6badad812fbffd

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