Malicious PDF — malware analysis report

Static analysis result for SHA-256 89802e112fe349ca…

MALICIOUS

PDF

32.9 KB Created: 2021-07-19 02:01:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7ed2cae5e06054bf2e74170c27f8ccc6 SHA-1: 09755e8bea6562eb122352c1e13802c37164d006 SHA-256: 89802e112fe349ca6f7b31e2a0cf1f1e3dace13b1d7e08f54da182e6156c495e
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 0.9590

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/free-coin-master-spins-blog-game-hack PDF link annotation
    • http://scarlier.fr/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://scarlier.fr/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://scarlier.fr/images/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://scarlier.fr/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://scarlier.fr/images/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://scarlier.fr/images/free-fans-on-tiktok_GM835599320.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_off000028f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28F2 23528 bytes
SHA-256: 1d4f0d98132f3831f1075ea6dd9b689ef9d1f7b3b5c2e7bb9d1b9eae6bdbc735
font_01_sfnt_off00005e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4C 18464 bytes
SHA-256: a2c76306a813766f02d16bba13a6176cc917de49c90529db8e6e2ffa1e8149db

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