Malicious PDF — malware analysis report

Static analysis result for SHA-256 c709a9012d4437ee…

MALICIOUS

PDF

29.1 KB Created: 2021-07-19 00:10:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2e54228458b8dded4e50bd7593a52c3c SHA-1: 1dbafaedb5413cd3c589bf170fd42523f8693fe1 SHA-256: c709a9012d4437eebf762e288b3f4d4ae1457db9d10f497c51d6f50acdf6a79b
160 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically advertising a 'free generator / game hack'. The document body includes a call-to-action phrase and multiple URLs pointing to potentially malicious domains. The ML classifier also flagged this PDF with high confidence, suggesting malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9359

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 http://netcdn.tw/app/479516143/minecraft-font-free-game-hack In PDF document text
    • http://www.notaioricci.it/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://www.notaioricci.it/images/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.notaioricci.it/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/minecraft-java-edition-code-free_GM479516143.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
font_00_sfnt_off000022c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22C2 21516 bytes
SHA-256: b6198a717ab01d1d251b6ae119a1ebfdfe9430c6fbc87228239b0495b3c2a66c
font_01_sfnt_off000051cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51CD 17712 bytes
SHA-256: 48684535abb05df1a4efb13fd94135dee175bf6b61229e4eaa41ff3ed13e5a52

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