Malicious PDF — malware analysis report

Static analysis result for SHA-256 8446c01fca409fc7…

MALICIOUS

PDF

42.5 KB Created: 2021-05-21 07:43:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d1cb4b869973f1f7c433943852a5a4d8 SHA-1: 6a8385db3affe866313deccad55e4d43f93f388b SHA-256: 8446c01fca409fc7eade1aca9ede06c9f3fdfe51f63b4ee60edc2fb0094f8879
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 0.7490

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 https://netcdn.xyz/app/431946152/roblox-royale-high-diamond-hack-game-hack PDF link annotation
    • https://scraperite.com/images/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/can-i-hack-pubg-mobile-uc_GM1330123889.pdfIn PDF document text
    • https://scraperite.com/images/earn-robux-sites_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003467.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3467 28880 bytes
SHA-256: c773cf7b67a60c0128486d09f573e25eadf6417d67032095e4852389344fa017
font_01_sfnt_off000074a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A1 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00008149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8149 19536 bytes
SHA-256: 9cb526c501b2cd2656a87403f494b9e3e6e4dc663a80e951563c0ffcc034b5e2

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