Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b80dae7043fd2e2…

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 06:34:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 13331b3b738ba38bc1d397c1b14da0a9 SHA-1: e1cd14062a219a8fdddd62adf34fb59aaae23e69 SHA-256: 2b80dae7043fd2e2fa9e8e93f947b97529d3d0635ddc83b66f1e2328860b559b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links to a known malicious redirector, disguised as a 'free generator' or 'game hack'. The document body and embedded links strongly suggest a lure to trick users into visiting malicious websites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/431946152/getrobux-now-game-hack In PDF document text
    • https://www.metal.hr/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-source_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/minecraft-free-download-ipad_GM479516143.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
stream_004_off00005164.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5164 24760 bytes
SHA-256: c1707cbefc49d9d5df23ee77f8df5e7ac6df530bf3ce87608c3ba2598e1fc3a1
font_01_sfnt_off000089c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C9 18120 bytes
SHA-256: de6bc5a2c3ccfe8cd092df1e0cd700ba4b2d067c0892dbade0599f643b41633a

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