Malicious PDF — malware analysis report

Static analysis result for SHA-256 b192dcb025087be5…

MALICIOUS

PDF

33.1 KB Created: 2021-06-25 19:44:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 8ce4a49913422b9d3fb271bf65bd93b4 SHA-1: 84e6a5cb46534fdcac506fbf4b69e3b9aee74350 SHA-256: b192dcb025087be5dcfe102af4687c39e48cc1d2325fb786b374eb8fd0cb9930
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free robux'. The primary lure is a link to 'roblox-robux-hacks-no-survey-2021-game-hack', which is hosted on a known malicious redirector. The document's content and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/roblox-robux-hacks-no-survey-2021-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-yin-vs-yang-cheat_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/black-clover-online-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/exploits-roblox-topkek-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-escape-obby-for-roblox-game_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/mcpe-client_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-bandit-simulator-hacker-crate_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hack-money-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-premium_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/redeem-cards-for-roblox-free_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_off00002aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA1 21936 bytes
SHA-256: fd5f9b74e78f3ae4e72ff77487990fec15891674e34240d40f83f698bc026a98
font_01_sfnt_off00005b08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B08 19492 bytes
SHA-256: b480e7f1431a2bb6008ad961bb9df096e0159bdde7866ea9603ec10b90be07a5

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