Malicious PDF — malware analysis report

Static analysis result for SHA-256 c788272ab60de465…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 02:45:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ce2e4e9c4006db975bc8cfcfa9961a80 SHA-1: 937862bddeeb562b305de75ead35de85e1f1881f SHA-256: c788272ab60de465eea3a5753d49bcdbccfb33a9e212f885d8c0b1cf9d1e8d4e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of free game hacks and in-game currency. The ML classifier also flagged this PDF with high confidence. The embedded URLs are designed to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-funny-funny-funny-roblox-3ds-games-game-hack In PDF document text
    • http://ines.co.rs/images/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-in-roblox-generator_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-robux-hack-on-computer_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-roblox-card-id_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/tiktok-free-followers-instantly_GM835599320.pdfIn PDF document text
    • http://ines.co.rs/images/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-world-zero-hack_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-free-admin-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-make-free-robux_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E90 21984 bytes
SHA-256: 81a9086238b2104b147f6894fb60fb4eb1d8aeca3b72b3de92b0d760ecf07929
font_01_sfnt_off00005f52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F52 19392 bytes
SHA-256: 3a5777f13140aafe838ea016574b5a0723f024d8f1998151e73cb3acf4fc6ce4

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