Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d1b73677b277daa…

MALICIOUS

PDF

36.4 KB Created: 2021-05-23 15:16:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 55bced328a21005b998ea2267f923802 SHA-1: 44f179b67c3e7f57028b565c0e3e0a948f11e530 SHA-256: 1d1b73677b277daa774e193125fdd29bf38380f0e2cd779ac1b278b34ddd1e97
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 0.9492

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/479516143/how-to-get-minecraft-for-free-on-ipad-game-hack PDF link annotation
    • http://eliteprofkosmetik.com.ua/images/get-free-robux_GM431946152.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/coin-master-spin-pattern_GM406889139.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
stream_002_off000031cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31CC 25856 bytes
SHA-256: 22beca0ab082216096bed0d33f03af04b316db224633d348ee69d10d011380f5
font_01_sfnt_off00006d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D28 18224 bytes
SHA-256: 9e691df568453236f4d0ad162bd2f3ab3ed053816089b7695d089a9ceca8acc7

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