Malicious PDF — malware analysis report

Static analysis result for SHA-256 98883143f8ecc21a…

MALICIOUS

PDF

50.1 KB Created: 2021-05-12 07:35:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e8828150a9fbdbd4ed14009568a71a8f SHA-1: d20d1dfae538085a14bb551f950bdd33d5144f7a SHA-256: 98883143f8ecc21a637dbc2163af9001ab80b6ab2c422cdfc4292514603f3b9f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting "game hacks" and "free spins" for popular games. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-claim-spins-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content or further malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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/coin-master-claim-spins-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-weird_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/wurst-download_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/daily-spin_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a58.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A58 27480 bytes
SHA-256: 9e03c660115bda6f31d4ea198c84761cb1e593b81d3a10ff8168e8c1a9b11f6a
font_01_sfnt_off00008a70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A70 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off00009811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9811 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off0000a201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA201 18056 bytes
SHA-256: 910bba4e9b8698471f084902004854848b7ccdb185fd175879c14395f4b2f674

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