Malicious PDF — malware analysis report

Static analysis result for SHA-256 75663dde72215a25…

MALICIOUS

PDF

31.5 KB Created: 2021-07-19 09:27:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 315391186631dcf6c5541cc67e636bd8 SHA-1: 500def9e11055c01441cc0a29b995ab9b70eadf0 SHA-256: 75663dde72215a25f2def3261cf487eb50dfdf934409665faa9de6713b857fea
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 0.9893

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/835599320/free-followers-on-tiktok-game-hack PDF link annotation
    • https://scraperite.com/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/minecraft-building-hacks_GM479516143.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_off00002a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A3B 22040 bytes
SHA-256: 521e9feb84a81705a5a8e9bdbea8760ab7710fa27220e49aafefbd542a137a09
font_01_sfnt_off00005ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB7 17692 bytes
SHA-256: 03131e98da2a54a1a72f5b4aa345640c80e569685032efd5f04fb63d3df01f9e

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