Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c25e41bba55eb81…

MALICIOUS

PDF

43.7 KB Created: 2021-05-17 19:33:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 29a5413d28d191e9630cd3d9cd8e8658 SHA-1: 7a5777428b131c7e621605874422237d747f7d1f SHA-256: 5c25e41bba55eb811bdc98aa3e64ff5323dc39f216d767f94874482b8c194b4b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as game hacks and generators. The embedded URL 'https://netcdn.xyz/app/406889139/hack-coin-master-download-game-hack' is a primary indicator of malicious intent, likely leading to a second-stage download. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/hack-coin-master-download-game-hack In PDF document text
    • http://www.fabbrotorino.eu/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/moon-active_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004827.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4827 24004 bytes
SHA-256: 8380e4655b612e03eef1101342e59e594cee7cb3fd803e4a29ae2034bf70e40e
font_01_sfnt_off00007e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E28 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8813 18296 bytes
SHA-256: 5719de20b3226af2bdcbf6ff002d7cecdad7590bfdf105e8aa16a01d29572d54

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