Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ced423068dee2ca…

MALICIOUS

PDF

38.8 KB Created: 2021-05-23 02:39:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 8fd5860b0603596d234376530d5214fa SHA-1: 7a1386bd2423de5eee1299145a7f949d48487672 SHA-256: 9ced423068dee2ca8d07606eda82f17b20c2b14a49849dea3a56ce2acc09afd1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains that host further malicious PDFs, all themed around game hacks and free generators. The document body explicitly mentions "CLICK HERE TO ACCESS COIN MASTER GENERATOR", reinforcing the lure. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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/how-do-i-get-free-spins-on-coin-master-game-hack In PDF document text
    • http://fobh.net/userfiles/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003441.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3441 30656 bytes
SHA-256: 1400bb89ca414885d8191765ded9adbc430d523bfcf3a769293ae3ed38fa59b2
font_01_sfnt_off000076d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D1 18216 bytes
SHA-256: 7b3dc5054b0587ec41e602859ac4e59ac97ec46c9406b1b4182074b4d7a08153

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