Malicious PDF — malware analysis report

Static analysis result for SHA-256 06da904073233b94…

MALICIOUS

PDF

47.2 KB Created: 2021-06-03 21:57:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 6b04d71dbf78bd8d271ccf6085722d98 SHA-1: 4f0302d340af390afdca6d3b017f70d2e052eb33 SHA-256: 06da904073233b942f36a92b14cd9eb64c25f4d8b34c74a839d14164588caf76
260 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1553.005 Mark-of-the-Web Bypass

This PDF document contains numerous links designed to redirect users to websites offering game hacks and generators, impersonating brands like Microsoft to facilitate credential phishing. The presence of multiple redirector links and the ML classifier's high confidence score indicate a malicious intent to exploit user interest in freebies for fraudulent purposes. No scripts were extracted, but the document structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/431946152/lazyblocks-com-robux-game-hack.
  • 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.online/app/431946152/lazyblocks-com-robux-game-hack In PDF document text
    • http://lib.untad.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/pokemon-go-free-quickest-charge-moves_GM1094591345.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-today_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/apps-that-give-you-free-robux_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_off00005579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5579 25904 bytes
SHA-256: 4824f64aec9d53cc1637d1090cd2c6f8d035fcee6b57d6f4e234348c87a45456
font_01_sfnt_off00009097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9097 20144 bytes
SHA-256: 877197c92c7b8f01e229741ecf9377db0a5bf9741e700443b1a683dbda465122

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