Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abf0d0c52aad092…

MALICIOUS

PDF

44.5 KB Created: 2021-05-14 04:10:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 9d3efc9efa879b7f09e00c1cbad90779 SHA-1: e42f24a5e4e116d62e393a9e7251ca2a92fc9dd0 SHA-256: 0abf0d0c52aad092192e86a72cbb2a3c0d15019e4d63f50c98d618b512fd27f8
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links designed to lure users to external websites, masquerading as generators or hacks for popular games. The primary redirector URL, https://netcdn.xyz/app/406889139/coin-master-hack-app-for-ios-game-hack, is flagged as malicious. The document body and embedded links suggest a phishing or scam attempt, likely to lead users to further malicious content or potentially download unwanted software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/coin-master-hack-app-for-ios-game-hack In PDF document text
    • https://www.jascon.de/images/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/robux-get-com_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47EA 32472 bytes
SHA-256: fc99c6e8e4de4bcc3bc62f01ecfa20705dd0d4139e1f73eab82d63eb2df8e111
font_01_sfnt_off00008c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C93 18056 bytes
SHA-256: 99ac472fc9888c4d6196604e4bfd2ad69a0378f55b2e0b369b27c1a23b293745

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