Malicious PDF — malware analysis report

Static analysis result for SHA-256 8844a4c80f8dc00d…

MALICIOUS

PDF

35.0 KB Created: 2021-06-20 02:00:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: bac4ca8c8762586ebef3f7fee11b2e6d SHA-1: 435f17cd33466d12c4b92513151163228a001649 SHA-256: 8844a4c80f8dc00d3ddd89e1ceefd6a9373ddbf693dd3501a5e9b5513b7f595d
180 Risk Score

Malware Insights

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

This PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users with lures related to game hacks and generators for popular games like Roblox. The presence of a direct IP address link and a known malicious redirector indicates a clear intent to lead the user to potentially harmful content or downloads. The document's structure and embedded URLs suggest it is designed to exploit user interest in obtaining in-game advantages, likely leading to malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • 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/march-18-roblox-hack-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/free-roblox-builders-club-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/idsk-roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-no-human-verification-no-download_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-generator-2021-real_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-catalog-hack-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-in-roblox-2021-for-just-started-hackers_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robloxwin-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/cheat-engine-roblox-mac_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/script-hack-2021-roblox-bubble-gum-simulator-free-passes_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-25-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/gametest-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-people-on-roblox_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_off000030ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CA 22456 bytes
SHA-256: cce4308b37f48e491745919a4551a9bc37581f7a0352766f08bd4595650e26a9
font_01_sfnt_off000062fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FD 19336 bytes
SHA-256: e9163cd7f4f4f2b98e088a34ebeedff916ff443f4e7f33b804d35c83f321ce46

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