Malicious PDF — malware analysis report

Static analysis result for SHA-256 deff11f324ec54e7…

MALICIOUS

PDF

36.2 KB Created: 2021-05-21 01:45:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7d3082ea9ebcbdf8fc75a698d13976b5 SHA-1: 310b96269770475535c0b896916746070be93df5 SHA-256: deff11f324ec54e7a0c10304f9b8c340dfce7eaa770502ed940c4e5561ac67fc
160 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting game-related generators and hacks. The document body and heuristics indicate a lure to download or access game cheats, which ultimately leads to a malicious redirector. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence score support this assessment.

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/479516143/minecraft-maps-pe-free-download-game-hack In PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/pokemon-go-free-trade-evolve_GM1094591345.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/com-roblox_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/minecraft-login-free_GM479516143.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
font_00_sfnt_off00003205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3205 24924 bytes
SHA-256: 6e2e5c0958986b9d71fea9705db1aa708559e6cc1409b25c0de040eac03c63ac
font_01_sfnt_off00006b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B39 18620 bytes
SHA-256: 0821b230906a16eab24876bc900cf5b44140eb476c0c2d68670d368f294fcdb9

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