Malicious PDF — malware analysis report

Static analysis result for SHA-256 0189f71060df3906…

MALICIOUS

PDF

46.5 KB Created: 2021-05-15 07:01:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: b9663045c37303b847b695a65f6ed1d2 SHA-1: 0d0d6bc6c087488e2b5188b22f22465c1ba41dff SHA-256: 0189f71060df3906882e35fb4d64c8339866fc64cd1cb1537f851d30cb3715ec
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector, that promise game hacks and cheats. The document body and heuristics indicate a lure for free game resources, likely leading to further malicious downloads or phishing attempts. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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-free-spin-link-today-2021-game-hack In PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/how-to-cheat-in-roblox_GM431946152.pdfPDF link annotation
    • http://103.19.59.42/__statics/gudangsoal/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/free-robux-images_GM431946152.pdfIn PDF document text
    • http://103.19.59.42/__statics/gudangsoal/files/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d4b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D4B 25280 bytes
SHA-256: e212c5441d0a3e6ab1f6009404d643657ab9b46366bc343e52286283ea6de9d9
font_01_sfnt_off00008703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8703 18812 bytes
SHA-256: 209d45ed87732d827821998a5283e56b95c39a3af4032faff2e6da7d3e76f78f
font_02_sfnt_off0000aacd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAACD 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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