Malicious PDF — malware analysis report

Static analysis result for SHA-256 e456e8cfd3747bbe…

MALICIOUS

PDF

37.0 KB Created: 2021-05-21 15:31:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 49163f10aa24a2f66cd30755c808f3cc SHA-1: 1e445d9313386411e56c7cd48a5e4bc715889769 SHA-256: e456e8cfd3747bbee758cf163ed5fc692f112ee1ecde652ef21c3415873a8041
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a visible call-to-action button, all directing the user towards downloading a 'Coin Master' hack. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the presence of external links and the lure suggest an attempt to trick the user into downloading a malicious payload or engaging in a scam.

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/406889139/80-free-spins-coin-master-game-hack In PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/minecraft-free-education_GM479516143.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/how-to-hack-people-in-roblox_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_off000035ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35EC 25068 bytes
SHA-256: 85905d23a8fbef7b786fd4a52f1641ebf4ca69218f733afdd929c0b92b52fc2c
font_01_sfnt_off00006f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5E 18268 bytes
SHA-256: c17bdfe55bcf294db1fa8b97ef7603a16e409092d20395243f391f783e354714

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