Malicious PDF — malware analysis report

Static analysis result for SHA-256 4244664da4f61a1c…

MALICIOUS

PDF

39.9 KB Created: 2021-05-23 08:24:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 84fbfb0f7082c839d611b9a5498894c9 SHA-1: c89c2fc4a53e4e1f655b7c4bef96eb2f099f5f90 SHA-256: 4244664da4f61a1cbb7c23fdb5a04fac74573e2bba819e58d8c5cd7b623beec6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary link, 'https://netcdn.xyz/app/479516143/how-to-get-minecraft-java-for-free-game-hack', is identified as a lure for free game hacks. The document body and embedded artifacts suggest a social engineering attempt to drive users to this malicious infrastructure, likely for further payload delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8015

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-java-for-free-game-hack In PDF document text
    • http://sfera-express.ru/images/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://sfera-express.ru/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://sfera-express.ru/images/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
    • http://sfera-express.ru/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://sfera-express.ru/images/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://youtuIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000035ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35ED 25312 bytes
SHA-256: 0ebe5af4ac8b94b7d208ed26b2ab9d583c6cb8d6808e61fbd49146f8b82c941b
font_01_sfnt_off00007011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7011 3288 bytes
SHA-256: 8cf28518ba9dce3c2af0460fef667f634d563f1a92cd647c8fb0d1ff4f814cb2
font_02_sfnt_off00007ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE5 18152 bytes
SHA-256: f45ec97da20a8e70f6e7437c3ced33d3bcbd99aef5af4daf3be0ff08d51a9e58

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