Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab7e15c23571a0e8…

MALICIOUS

PDF

35.8 KB Created: 2021-05-16 19:43:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e268e4000045f5781737ec4b0ed49f9d SHA-1: 33d0741a8576aad9cfebd7436ce2ec41da4772ba SHA-256: ab7e15c23571a0e847d1e72b943f4fcb58758eb858fc0b310c8bb3a4eb065527
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a 'free generator / game hack' lure. The document body also contains text and a button-like phrase encouraging users to 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', reinforcing the social engineering aspect. The embedded URL is the primary indicator of a malicious redirector designed to lead users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0265

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/hacks-for-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_off000033d1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33D1 24676 bytes
SHA-256: 067c52e6230d9c690fc8e8b0078b64263acfd39a0bce7d3e84c66c89114d763d
font_01_sfnt_off00006c0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0E 17880 bytes
SHA-256: aa3394458939619806496cbc198b043db21b7abc6a7e758b364f4c9fc0519879

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