Malicious PDF — malware analysis report

Static analysis result for SHA-256 458670878e0132d7…

MALICIOUS

PDF

36.4 KB Created: 2021-05-23 03:20:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 472c1fd70cc4e1187067e45a591730e7 SHA-1: f5500d41c976e2458453b5b255f4a4c50ab38503 SHA-256: 458670878e0132d746bd6fba9cf5bcfe22806b305f292872050c6d91f1dc95be
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically advertising game hacks and free Robux. The document body text and heuristics confirm the lure is for a "free generator / game hack" which points to a malicious redirector. The ML classifier also flagged this PDF as malicious. No scripts were extracted, but the embedded URLs and the nature of the lure suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/431946152/how-to-get-free-robux-with-no-verification-game-hack In PDF document text
    • http://eurosystemssrl.it/images/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/tiktok-free-folowers-75_GM835599320.pdfIn PDF document text
    • http://eurosystemssrl.it/images/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-hack-without-human-verification-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_off0000312f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x312F 24840 bytes
SHA-256: d2d9618b4dbaa961a931b3978b9b977a16270ee5b6c47a5b6ddbf52a1fe691d1
font_01_sfnt_off00006a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3F 19128 bytes
SHA-256: acb72b37f9b0a7ac0fa23716fb81d4af9379ab539551c05381b29cd372bdbe33

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