Malicious PDF — malware analysis report

Static analysis result for SHA-256 293bc35225b3c8cc…

MALICIOUS

PDF

35.3 KB Created: 2021-07-09 19:55:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5819c83e2e94884a5f8d5c4aef9e9a25 SHA-1: 320205646f2ccb7b401d553153c75c3803f101be SHA-256: 293bc35225b3c8cc79b2330e10949872812d726eade67b96874595a6d703ce04
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a malicious redirector. The primary lure is a promise of 'free game hacks' or 'spins', directing users to http://netcdn.tw/app/406889139/free-coin-master-spins-daily-game-hack. This infrastructure is known to host malicious content, likely leading to further malware downloads or phishing pages. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-coin-master-spins-daily-game-hack In PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/roblox-cheat-engine-fly-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3475 22484 bytes
SHA-256: cb64544c4c7ce1387ff26402296de22e9fbd9208b1b23e5c89c509fc9fc6dd79
font_01_sfnt_off0000667e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667E 18596 bytes
SHA-256: a7833972b885d34acb5ad01908fbd6133f193c29e2abbc4434009272e0e2ed6c

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