Malicious PDF — malware analysis report

Static analysis result for SHA-256 06b2a8708261d657…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 17:37:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 88b5141c96d5d20a66a4cafab86c27e6 SHA-1: 36b7c5d5d4e8044eefb69fca5db56251b0537639 SHA-256: 06b2a8708261d657920b4ea8e49cc0b71ed0534e6bea61af24dea1187396252f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious domain, masquerading as a generator for free Robux or game hacks for Roblox. This lure is designed to trick users into visiting the malicious site, likely for further exploitation or malware delivery. The ML classifier also strongly flagged this PDF as malicious.

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.tw/app/431946152/roblox-free-robux-codes-game-hack In PDF document text
    • http://library.stembi.ac.id/repository/roblox-how-to-get-free-knives-on-murder-mystery-2_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-cat-roblox_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-hack-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-alts-roblox_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-to-get-free-robux-on-mobile-device_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/counter-blox-roblox-offensive-hacks-2021-v3rmillion_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/speed-hack-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-quick-easy-cheat_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-hack-bubble-gum-simulator_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/to-cash-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-hack-facebook_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-to-get-free-robux-without-downloading-anything-2021_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/robux-hack-no-survey-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/dragon-ball-advanced-battle-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/ninja-animation-package-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3076 22560 bytes
SHA-256: be2de62a878949d82844f2e3904706cb2f79d68d3341d69ef42afa9e05825bbf
font_01_sfnt_off000062fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FD 18964 bytes
SHA-256: a55805342354896b15de53c372ce6b4f67675692ecef428388acdddaf3dfd905

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