Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdf4106ae172b3cf…

MALICIOUS

PDF

37.4 KB Created: 2021-05-20 20:06:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e233d5e3d7493d228418947c03cd6b4a SHA-1: 26df8a72931e0e6dc6a1a0340bea7151979e9f37 SHA-256: cdf4106ae172b3cf881658ab968ba5e514ca022037da9f2fefab8cf8c026aad6
160 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector domains, specifically identified as malicious infrastructure. The document body and heuristics indicate a lure for "free Tiktok Views" and "game hacks", directing users to click through to potentially malicious sites. The ML classifier also flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content or downloads.

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/835599320/free-tiktok-views-game-hack In PDF document text
    • http://porownaj-laser.pl/images/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • http://porownaj-laser.pl/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://porownaj-laser.pl/images/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://porownaj-laser.pl/images/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://porownaj-laser.pl/images/100-robux_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_off00003871.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3871 25488 bytes
SHA-256: 2b7da117aebd7af08e8f47f2e01d4fdfbfb12ad095fbbafce116a3e5e432f35c
font_01_sfnt_off00007294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7294 17752 bytes
SHA-256: fbbed6aa406878393a00abdc0937322fa009c5b8448fdc35bdb3145f27770f26

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