Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b3d3726622bb1ef…

MALICIOUS

PDF

37.0 KB Created: 2021-05-14 15:05:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: bff9c452bb1c3f3f1516b69dfdc6c5c2 SHA-1: 1874cfc9df81681c0bf6b44f820c4d94dbafe111 SHA-256: 6b3d3726622bb1efa35d533f34226f3472ad4396dc3f7b8081d246c2b4e76f1f
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'Coin Master Hack' and embeds a link to a known malicious redirector. This link, https://netcdn.xyz/app/406889139/coin-master-hack-ios-download-game-hack, is designed to trick users into downloading potentially unwanted or malicious software. The presence of a visual download button further supports the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/coin-master-hack-ios-download-game-hack In 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_off0000369e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x369E 25404 bytes
SHA-256: c50417fe1fcee787baab52230b0a4ffcae3bc5f16beb68a3fe4449d2efa0736f
font_01_sfnt_off00006f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F01 18296 bytes
SHA-256: abb5dc3882d33bb675e42633b9ef907b5fa8a8f8ffe877e273a1ba74b2e79714

Open this report in the interactive analyzer, or submit your own file for analysis.