Malicious PDF — malware analysis report

Static analysis result for SHA-256 dac5f9c461fc6e13…

MALICIOUS

PDF

36.8 KB Created: 2021-05-23 22:24:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 402b54d8d9f324d7f1715d77a20f838c SHA-1: 0c53595ec04b307cc3281c3cb06853f163065a92 SHA-256: dac5f9c461fc6e13d69cb402478c57ae010b53ea51a6963da00134ad48acf03b
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and generators. The document body explicitly contains a call to action to 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', further reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/479516143/minecraft-noob-vs-pro-vs-hacker-vs-god-game-hack In PDF document text
    • http://codicicolori.com/images/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://codicicolori.com/images/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://codicicolori.com/images/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://codicicolori.com/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://codicicolori.com/images/coin-master-free-spins-and-coins-2021_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_off00003554.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3554 24908 bytes
SHA-256: 624e18a6fb70619f588eba8dd874356fa0b2c5cea90b1ebc361f5d212bb54976
font_01_sfnt_off00006dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD1 18500 bytes
SHA-256: 35163f059b41a7a3602679841a335cd83055ee85c0a72342166b4475486ea273

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