Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14bdb3002a05436…

MALICIOUS

PDF

43.4 KB Created: 2021-05-11 22:42:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 84be4c649f96b36f8c8fd0fbc862ac64 SHA-1: a0c07ae8f72819428707510c5b63ca59de82dfba SHA-256: f14bdb3002a05436222c981fb5f3852c9c3ec6fb02eff12d75a8f976582bab3e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to a known malicious domain, masquerading as a 'game hack generator'. The document body and heuristics indicate a lure for free game currency or hacks, aiming to trick users into visiting these malicious sites. No scripts were extracted, but the presence of malicious redirector links and the lure suggest a phishing or social engineering attack.

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/get-coin-master-hack-game-hack In PDF document text
    • http://enosiderma.gr/images/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://enosiderma.gr/images/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/roblox-re_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://enosiderma.gr/images/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/give-me-robux_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • http://enosiderma.gr/images/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/real-robux-generator_GM431946152.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_off00004739.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4739 23872 bytes
SHA-256: 643b3318fe0baf2b44cf736ab7acc24122ae65c26f64ededb0a725c32a22dbf5
font_01_sfnt_off00007da0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA0 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off0000887f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x887F 17716 bytes
SHA-256: 8a0578e54c06e5eadc0c0c8832f5d62fb0328dd393573d3fab931686100c837f

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