Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aaf1fb6990bf4f9…

MALICIOUS

PDF

36.5 KB Created: 2021-05-20 07:42:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 34ca8990466cd9fb18c462d043700938 SHA-1: 5a02835f219c45bd704a56cc910c2bc4bfbd6a27 SHA-256: 3aaf1fb6990bf4f9fb699c38c505a63fbbe44589742a19ddd9c0c1fb82c6d381
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a 'free generator / game hack' lure. The embedded URL, https://netcdn.xyz/app/406889139/get-free-coins-for-coin-master-game-hack, is associated with this malicious redirection. The document body text and PDF facts reinforce the presence of this lure, suggesting the primary goal is to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0076

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/get-free-coins-for-coin-master-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000307d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x307D 23972 bytes
SHA-256: 7fc8c0f4d96b253ad0f1537647d0761ceced5b9ad90b80dd0852409694442bbd
font_01_sfnt_off00006503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6503 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00006ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE9 17712 bytes
SHA-256: 80118a78f95baa80ee89349241cf1d538d1c5fbd1ee094de5b41e3586bb22105

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