Malicious PDF — malware analysis report

Static analysis result for SHA-256 39c8514d052a75ec…

MALICIOUS

PDF

37.3 KB Created: 2021-05-23 15:56:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e0407447c466a215b7e4c1066da66618 SHA-1: 6ac66ca3593bf83fcb266b1f992928c79d16a3d1 SHA-256: 39c8514d052a75ec2620788c67cc01f6c9b9fc67abad134448f39128283301fc
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or free generators. The heuristic firings indicate a lure for free game hacks and a general malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in free game-related content to drive traffic to malicious sites, likely as part of a phishing or scam campaign.

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/can-you-download-minecraft-for-free-game-hack In PDF document text
    • https://www.appartamenticroazia24.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.appartamenticroazia24.com/images/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • https://www.appartamenticroazia24.com/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://www.appartamenticroazia24.com/images/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • https://www.appartamenticroazia24.com/images/cm-daily-spins_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
font_00_sfnt_off00003560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3560 25760 bytes
SHA-256: dd16b4f10efbcdef7fe017d99263543024833a32d4a82cc0793498c494979203
font_01_sfnt_off00006f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8B 18592 bytes
SHA-256: ed5684d9a13e4aff878e16593a586bb1b0a035d61c002246dac68e4b539701c0

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