Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba3562cfd73336e4…

MALICIOUS

PDF

36.9 KB Created: 2021-05-23 04:09:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9074a18344bf8b885c1f6263f92a636c SHA-1: ad5ed175805f681b4c571bc149a7e8769d5da2ef SHA-256: ba3562cfd73336e4373a1a1ef5fe4dc43a472526e5fcb758f76d3a714c53c06b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, including one that masquerades as a free game hack. The document body also contains a call-to-action phrase and embedded URLs that further support the lure. The ML classifier also flagged this PDF as malicious. No scripts were extracted, but the embedded links are the primary mechanism for the attack.

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/how-to-get-minecraft-bedrock-for-free-game-hack In PDF document text
    • http://www.elis-strechy.cz/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://www.elis-strechy.cz/images/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.elis-strechy.cz/images/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://www.elis-strechy.cz/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://www.elis-strechy.cz/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32CE 26572 bytes
SHA-256: 06bedca13cd3abc03b7357c970b226d0fcd27f6658a23bcc94865e5a30e78d51
font_01_sfnt_off00006eaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAF 18436 bytes
SHA-256: 052b3e4eb9e318375354f57606905a9f494055cf593924234d38117cd20d5d16

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