Malicious PDF — malware analysis report

Static analysis result for SHA-256 696ab1571f20449c…

MALICIOUS

PDF

39.4 KB Created: 2021-05-22 08:36:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a3e54c27173ee5cb7955069908b8f70d SHA-1: e47fdfb78f494489f9bf363e436e2187a690faa9 SHA-256: 696ab1571f20449cb4f56e7e079b43832fdf5553247030fbf27c0aaf63f15eaf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically advertising "free spins" and "Coin Master" game hacks. The ML classifier also flagged the document as malicious. These links are designed to lure users to potentially harmful sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/406889139/free-spins-coins-coin-master-game-hack In PDF document text
    • http://rzt.com.ua/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://rzt.com.ua/images/pokemon-go-free-download-version_GM1094591345.pdfIn PDF document text
    • http://rzt.com.ua/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://rzt.com.ua/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://rzt.com.ua/images/free-coin-master-coins_GM406889139.pdfIn 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_off000032c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32C6 25124 bytes
SHA-256: e26df910cad2f96c4ceebbce1f79e469eee83d50b311664cbf17afc584603a74
font_01_sfnt_off00006a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7C 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off0000757f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x757F 19212 bytes
SHA-256: 711ee579c7a84f3cb3388e477d5ff50eb2a757bb790b4416f116504c32a9fd67

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