Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4125bf02cc5b20c…

MALICIOUS

PDF

38.7 KB Created: 2021-05-21 06:13:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1ac1fa3853d20ff07048c458f00ba095 SHA-1: 7983da13d3d1c0480a7717d7f821d6f28427824b SHA-256: e4125bf02cc5b20cbacae5b39b4dd38dd70ad97e7b0176d4062a150017cca801
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting "game hacks" and "generators" for popular games. The primary malicious URL, https://netcdn.xyz/app/406889139/claim-free-spins-coin-master-game-hack, is flagged by heuristics as a malicious redirector. The document body also contains this URL and other related links, reinforcing the lure. While no scripts were explicitly extracted, the nature of the links suggests a phishing or scam attempt, likely leading to further malware download or credential theft.

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/claim-free-spins-coin-master-game-hack In PDF document text
    • http://www.niarads.com/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.niarads.com/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://www.niarads.com/images/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • http://www.niarads.com/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://www.niarads.com/images/coin-master-hack-apk-iphone_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_002_off000033fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33FD 24648 bytes
SHA-256: 6c33f74aea6552933119e53114ae5de5b1c9f0a5931adf0dd926417f2d800170
font_01_sfnt_off00006c6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6F 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7621 18220 bytes
SHA-256: a27868aca9095d1db43e3a34661a683bdd93dcaecb4c52cce590f5e85fca806a

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