Malicious PDF — malware analysis report

Static analysis result for SHA-256 800a34cfa6d67d05…

MALICIOUS

PDF

48.1 KB Created: 2021-05-16 03:02:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: c520b872c68713aac1235d45e7e047f2 SHA-1: 425a7326b66f51e69068eaede8fb6374ecf7de1b SHA-256: 800a34cfa6d67d0577e02ec9f6f44068c988391857b0a6cafc02f76a52568cf5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free in-game currency or hacks, directing users to a known malicious redirector. The embedded URL is designed to trick users into visiting potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and heuristics indicate a malicious redirection attempt, likely to facilitate further compromise or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/431946152/how-to-get-free-robux-2021-no-human-verification-game-hack In PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/roblox-com-free_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/watch-ads-for-robux_GM431946152.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_off000050e2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50E2 26900 bytes
SHA-256: f736fc6504756bca747d95c7a7bfc96018f25982e0bb872d07fad134399e12bb
font_01_sfnt_off00008c0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0E 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off0000961e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x961E 19428 bytes
SHA-256: dfc7ca414cfca4f80301273998e01ceb4bfd22e3de883fcbe9d6a0102e8d41a4