Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0617f2335346d66…

MALICIOUS

PDF

35.5 KB Created: 2021-05-11 15:47:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 62171e53b5da44bb2455bf39fe827b77 SHA-1: 62dc4bbb8e5c8e0ca7c944525b0d60b04a564872 SHA-256: d0617f2335346d660b6505ccbe7d38a8db760d26695dea410a5ed6900f7e771e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure related to 'free spins on Coin Master' and includes a link to known malicious redirector infrastructure. This suggests a phishing or scam attempt designed to lead users to potentially harmful websites. The presence of a download button lure further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0306

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/hack-to-get-free-spins-on-coin-master-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_off00003203.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3203 24492 bytes
SHA-256: 64b4ef6f30509d48051e84023da0b326ad9f4151523fc43c8faf321e44c501df
font_01_sfnt_off000069f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F8 18056 bytes
SHA-256: 2fbb404e8dbae95b2969f6d33f181e6a84e8673995acec3e52dde22e48280f02