Malicious PDF — malware analysis report

Static analysis result for SHA-256 36ad093901c9c737…

MALICIOUS

PDF

47.5 KB Created: 2021-06-08 18:37:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a77c0dd5177e89c8993157c5272d397d SHA-1: 1d1ff05f8b3e780fac23746e8b4cb226cffe0326 SHA-256: 36ad093901c9c73783bdf824743993977a97a740b8bd9dc8e02b768349c72de9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/free-roblox-card-generater-game-hack PDF link annotation
    • http://eltisstudio.sk/images/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-roblox-card-generator-need-to-do-nothing_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://eltisstudio.sk/images/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://eltisstudio.sk/images/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-20-free-spins-link-2021_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50BF 26432 bytes
SHA-256: 535853eae213d218127a066203978e665dc1537275648e5c5866076901e631f8
font_01_sfnt_off00008c6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6D 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off0000961b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x961B 18456 bytes
SHA-256: f88e7f36c8e40c3851beaaccf8fede8880ef1ed63c7072abb9e7a3f66c81ad84

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