Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdf789c715178f78…

MALICIOUS

PDF

37.1 KB Created: 2021-05-22 06:42:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b7e4d0add1aafa8203c0d57ed733e468 SHA-1: 28bdc6509d00eb923bc4621a216d8eb23a6a434e SHA-256: fdf789c715178f788363c932c803dc222a364c1959c4143e49633f96c1dbe32e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent call-to-action phrase, suggesting a phishing or scam attempt. The ML classifier also flagged the document as malicious. The primary malicious URL, https://netcdn.xyz/app/479516143/free-minecraft-premium-account-game-hack, likely hosts a payload or leads to further malicious content. The document's content and structure align with social engineering tactics to trick users into downloading potentially harmful files.

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/free-minecraft-premium-account-game-hack In PDF document text
    • https://www.kaojen.com.tw/upload/files/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/freerobuxhack-us_GM431946152.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
stream_002_off00003684.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3684 25748 bytes
SHA-256: 1e6e03f0ae396fa9a03422d154da8cf9d373c22e6306658e2d4fe14c1a1485dc
font_01_sfnt_off00007047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7047 18264 bytes
SHA-256: d2b91c2a6de84c5c57e6f7a8c0463896f89b33dea675ffd93dbde2c8d35c79e1

Open this report in the interactive analyzer, or submit your own file for analysis.