Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e622a473aba5bfa…

MALICIOUS

PDF

33.7 KB Created: 2021-06-20 06:18:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: df6e30b9552ae03d36e9a22249253b26 SHA-1: 5c2ec9867f1858c9ad93a87c6bf18f5d9d65f19e SHA-256: 3e622a473aba5bfaaf4abe7d3cf1c6457fe0a2cb191a5f739af2f1a80b96c9b2
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of 'free game hacks' for Roblox to trick users into clicking malicious links. The document displays a fake CAPTCHA or human verification prompt, a tactic to coerce users into executing further actions. It contains multiple embedded URLs, including one pointing to a known malicious redirector infrastructure, suggesting it's designed to lead users to potentially harmful sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/top-10-best-free-t-shirts-in-roblox-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/furk-se-free-key-roblox_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-account-hacker-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/lawn-mowing-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-infinite-robux-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/script-free-robux-2021-no-fake_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-make-a-free-robux-game-on-roblox-alvinblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-just-enter-username-no-verification_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/new-roblox-exploit-wizard-simulator-hack-god-mode-autoattack-1mp4_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-android-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-have-hacking-tool-in-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/http-robux-free-in_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_off00002e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3C 21464 bytes
SHA-256: 72c3c063237ee1293cd60a9c4986fa2d0de6da5d1e788ca493c6b0047d467a7b
font_01_sfnt_off00005d13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D13 19528 bytes
SHA-256: f7bbdac2fe5f9af7e4b6306c476d596d0b553541edcda13a935911d8aba004db

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