Malicious PDF — malware analysis report

Static analysis result for SHA-256 b93b2aa22563f5c6…

MALICIOUS

PDF

32.6 KB Created: 2021-06-26 18:51:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a90f59c8ea2af6d04dfe11d45367573c SHA-1: a9fdbfd55bb614964ab5950476750cb4b413a57c SHA-256: b93b2aa22563f5c6354d135041561d28b664e8d52d869d6a3533f8c3413e9c53
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game hacks and currency, directing users to a known malicious redirector. The document body contains numerous URLs that reinforce this theme, likely intended to lead users to a phishing or malware download site. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to harmful content.

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/free-white-hair-roblox-game-hack In PDF document text
    • http://lib.stie-aub.ac.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-hack-roblox-so-i-can-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-hack-dino-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/redeem-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-roblox-account-getter-v3million_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-sitecom_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/if-sombody-cheats-in-roblox-what-do-you-do_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-passwords-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-backpack-code-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-roblox-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-without-downloading-anything-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-admin-in-any-roblox-game-2021_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_off00002ce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE6 20720 bytes
SHA-256: 6bdc44d08e1f9887660e6fea5041ac0c8aa321ecaae4585e1415a569f203c584
font_01_sfnt_off00005983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5983 19240 bytes
SHA-256: b2768680d970723a5f4ef7a907fd378ce2fed2d121218129a8a976a70de77b29

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