Malicious PDF — malware analysis report

Static analysis result for SHA-256 4da0da534ca54152…

MALICIOUS

PDF

32.3 KB Created: 2021-07-25 22:24:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4c70e850af4cfdd04d79320176da7ba1 SHA-1: 090c016fc99be4e37c5b7f702c348000c89501f1 SHA-256: 4da0da534ca54152f71dfaaef7bd145ca4a834260e53990b2cbfcff13154a76a
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 0.9900

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/479516143/minecraft-bedrock-edition-pc-download-free-game-hack PDF link annotation
    • https://lesvossolidarity.org/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://lesvossolidarity.org/images/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • https://lesvossolidarity.org/images/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://lesvossolidarity.org/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://lesvossolidarity.org/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • https://lesvossolidarity.org/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lesvossolidarity.org/images/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://lesvossolidarity.org/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://lesvossolidarity.org/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lesvossolidarity.org/images/minecraft-pe-free-apk_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_off00002a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A47 22052 bytes
SHA-256: c4898dc315e37123c30b513f3a09c353805859884f2e6b7873e10c1fa3361319
font_01_sfnt_off00005ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB9 18828 bytes
SHA-256: bab883dfc84e1a3f345dfae0998a7e69f5c6c1aec602e5a20de586714fc0e9f0

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