Malicious PDF — malware analysis report

Static analysis result for SHA-256 428d1cf710c06a9a…

MALICIOUS

PDF

41.2 KB Created: 2021-05-20 01:34:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0b89b56aa557c805fb254f9b4bc56a01 SHA-1: 1f78cc4530cfa97b5fcf6faf6c46211d341f9939 SHA-256: 428d1cf710c06a9abdf9736b1b0572e9fe6a568d64acb38bd64fea4156062afe
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'game hack generator'. The document body also contains a clear call-to-action to 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', reinforcing the lure. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coinmaster-blogspot-game-hack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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/coinmaster-blogspot-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_003_off000035ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35EC 26332 bytes
SHA-256: e7f2add7f58aca47eec239aa5eb89ac5da8686b1a2f15c6093722bb16306d2f8
font_01_sfnt_off000073d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D1 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00007efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFB 18560 bytes
SHA-256: b6c1a4b4a396e514168379159069ddcbbdb2f4734aa5f4f24f50e1de42ff982a

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