Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dc56fc7f487e47d…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 06:14:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 366b67b05013727ea1e5e9511af27b0f SHA-1: c6c35b6185e3a4581cf0629bbc5488fd72c06d83 SHA-256: 2dc56fc7f487e47d40390dfaa391df3d0b08f7c80ad37bb04f002fa2fc5c4060
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary redirect URL is https://netcdn.online/app/406889139/how-to-log-out-of-coin-master-game-hack. This indicates a social engineering lure designed to trick users into visiting a potentially harmful site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/406889139/how-to-log-out-of-coin-master-game-hack In PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/pokemon-go-free-and-verizon_GM1094591345.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-link-2021-today_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_004_off0000531a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x531A 26216 bytes
SHA-256: 0de961e8d45968724324ce79bbff36385258657df8094b1e5ecaf17ee387dfae
font_01_sfnt_off00008f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F1C 18140 bytes
SHA-256: 3138221b31ed8b6406c0e26913c361d842eb1c4d2714b685327af50e84741aa0

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