Malicious PDF — malware analysis report

Static analysis result for SHA-256 c02d31570ee25a9e…

MALICIOUS

PDF

34.6 KB Created: 2021-06-18 18:36:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0d58929d001bd62fd06d8fb4fa8925e4 SHA-1: 6c033e290f3c0b07b2c4ac2ebf5db495238e3f1e SHA-256: c02d31570ee25a9e642e0efc595e8f4e288f42e0fe430438d66659044740f03d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that promote a 'free generator / game hack' for Robux, a common lure for phishing and malware distribution. The primary link directs to a known malicious redirector infrastructure, indicating a high likelihood of leading users to a malicious site or download. No scripts were extracted, but the document's structure and content strongly suggest a phishing or malware delivery attempt.

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.co/app/431946152/robux-free-generator-2021-game-hack In PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-no-human-verification-no-surveys_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-hack-2021-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/redeem-card-2021-robux-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-free-faces-with-no-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-inquiditormaster_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-coloring-pages-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/robux-gratuit-no-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-hack-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-roblox-card-codes-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-hair-roblox-no-model_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-free-robux-2021-on-pc_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-hack-reviews_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-dominus-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-discord-bot_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_off00002f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F47 22452 bytes
SHA-256: 9b0dd329973584267802d9659c4ca9bca3c16c7ff3a0cf2626c2432037ac0f4a
font_01_sfnt_off0000617f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617F 19224 bytes
SHA-256: 4ab3f8358ad5cefd2a5fb636987891072fb0416ef60e491fa0b497ac79733f13