Malicious PDF — malware analysis report

Static analysis result for SHA-256 84cc8645acd142d1…

MALICIOUS

PDF

44.2 KB Created: 2021-05-16 15:02:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e6b8e7f826af72c9e39c575c25bff651 SHA-1: 496708bcce4f4d90d6fab28f1f250d067c007f81 SHA-256: 84cc8645acd142d1b66b5cb88f07124c2e04e2279ceb22a47f307588d2a29077
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 0.9648

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/406889139/get-free-gold-cards-in-coin-master-game-hack PDF link annotation
    • http://sid3r.com/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/rape-simulator_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/roblox-hair-for-free_GM431946152.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_003_off00004808.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4808 24824 bytes
SHA-256: c9dd74293a1f8157c8f619eed044ed969863f09acaabd5baa37d26d60321fcd5
font_01_sfnt_off00008050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8050 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off00008b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B53 17960 bytes
SHA-256: f869bc891c1b65231b6187b5c2b301482ba9b67ab65507215d31018b67534d9f

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