Malicious PDF — malware analysis report

Static analysis result for SHA-256 40386b48a4051651…

MALICIOUS

PDF

36.1 KB Created: 2021-05-10 12:13:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3473f26b25139d0a2494888fe780a25c SHA-1: c84d3f4f3b734f87c82debce8c385893cbb95334 SHA-256: 40386b48a4051651f1c3e4e57fc877abef330d54660eae6ca9d2288c1d298584
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for a "Coin Master Hack Tool Generator" and embeds a link to known malicious redirector infrastructure. The heuristic firings indicate the document is designed to trick users into clicking a malicious link, likely leading to further malware download or exploitation. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0283

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-tool-generator-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_off000034c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34C6 24648 bytes
SHA-256: 52a6073e23d56f59f1c415a1b6c7f08624d0ebf0fc6f0ea21373041b03ff7d58
font_01_sfnt_off00006d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D56 17788 bytes
SHA-256: 0f526e1abc45333298d61d2ffbd228c521fd862e0b4d0d4d8e01ed873be913f0

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