Malicious PDF — malware analysis report

Static analysis result for SHA-256 348bddfe5afb59b1…

MALICIOUS

PDF

35.3 KB Created: 2021-06-19 02:44:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6d561c71b6881f5c85219cbfb0ae26fb SHA-1: 8b09c7f2449bc5e6e62671bb68492d65e5647952 SHA-256: 348bddfe5afb59b1ace37ee36f16c4d9270ec9bcc0bdb921c15dbf999d0bc0fc
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, promising free items and cheats for popular games. It contains multiple links to malicious redirectors and IP addresses hosting further malicious PDFs. The document body and heuristics indicate a clear intent to trick users into visiting these sites, likely for further malware delivery or credential harvesting.

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/how-to-get-free-stuff-in-catalog-roblox-2021-nick-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-synapse-roblox-free_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/roblox-dinosaur-simulator-cheats-dna_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-acounts-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/stella-beta-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-rs_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-tiktok-followers-no-human-verification-2021_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-people-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-account-codes_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-cheats-picture_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/top-10-free-robux-sites-that-actually-worked_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_off00003025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3025 22676 bytes
SHA-256: d95e373c51506a6a46f81635248aa0540dabd60b4b68b197373545d1a74629fd
font_01_sfnt_off000062e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E1 19752 bytes
SHA-256: d9f52afe7b634c2cd4445a71e92f31d7266312c720790c0b192e86de7025f639

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