Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2c00a209123ee98…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 02:12:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f32fc987dadd903c8e39a735aba88555 SHA-1: 73a22e750794c06871fe99deec3b0076bcbe68b0 SHA-256: e2c00a209123ee9815040e03e022a3704d000b952844d613e0a3c1517229e05d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'hacks' for popular games. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the use of known malicious redirectors. While no scripts were explicitly extracted, the document body and embedded URLs suggest a phishing or scam attempt to lure users to malicious sites, likely as a precursor to further malicious activity. The presence of embedded URLs and the lure of free game items strongly indicate a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/coin-master-free-spins-ios-game-hack In PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/fbchampion_GM406889139.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/robux-miner_GM431946152.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_003_off00004793.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4793 25016 bytes
SHA-256: 632b628b611a788d1d7b38b6f2dae661f72908bb579c0e89e238bae0ec3da930
font_01_sfnt_off0000814b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x814B 17884 bytes
SHA-256: ed32a7283540f03019957517c048a41e05a4a835eff26d475850fba8ab898570

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