Malicious PDF — malware analysis report

Static analysis result for SHA-256 2015c15a9d345d0b…

MALICIOUS

PDF

44.5 KB Created: 2021-05-16 10:35:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aca453b05342c3e593f98aabe7562413 SHA-1: e5979edf6f8e520a7467131464b8c630b1c5d914 SHA-256: 2015c15a9d345d0bf4253261ce9939811d0fa82c39a65b58784c0f36326129a7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that point to known malicious redirectors and lure users with game-related content like "free spins" or "hacks". The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/how-to-get-free-spins-on-coin-master-2021-links-game-hack In PDF document text
    • http://soma.com.ua/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://soma.com.ua/images/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://soma.com.ua/images/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://soma.com.ua/images/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://soma.com.ua/images/give-free-robux_GM431946152.pdfIn PDF document text
    • http://soma.com.ua/images/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://soma.com.ua/images/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://soma.com.ua/images/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://soma.com.ua/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://soma.com.ua/images/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://soma.com.ua/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://soma.com.ua/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://soma.com.ua/images/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://soma.com.ua/images/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://soma.com.ua/images/roblox-hack_GM431946152.pdfIn PDF document text
    • http://soma.com.ua/images/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://soma.com.ua/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://soma.com.ua/images/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://soma.com.ua/images/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://soma.com.ua/images/download-hacked-games-com-coin-master_GM406889139.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_off00004991.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4991 24308 bytes
SHA-256: a7168d44622bf0822c67741a388afd27eb233b9e9147f98b60511483bdc14f37
font_01_sfnt_off0000806c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x806C 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008a57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A57 18624 bytes
SHA-256: f59c20d26de17689e062caab18cac0dfde3a427c20d8ecbbbaf3d06e0b2cadbb

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