Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e2ce0058ca2f83…

MALICIOUS

PDF

36.9 KB Created: 2021-05-10 12:14:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f29d50dafa5d1788ac27c7f465d62fbe SHA-1: 770e533e4604f9c113929f4a3d50e6a2a48b66c7 SHA-256: d9e2ce0058ca2f836c12fa32844b094c958f764160ef780b630991bc97232bdc
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to malicious infrastructure, masquerading as a "Coin Master Hack Apk". This lure is designed to trick users into visiting a potentially harmful site. The PDF structure and embedded link strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0313

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-apk-april-12-2021-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (stream_003_off00003438.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003438.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3438 26416 bytes
SHA-256: ad0c99738fa4800e5e33ba996beeb29d32869a2e245245dfb5dc1456e7a4cda2
font_01_sfnt_off00006e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8F 18368 bytes
SHA-256: 3b30659feb21661d356217d8966cbd258fac2e7fc1ab43a41212753c361910ee