Malicious PDF — malware analysis report

Static analysis result for SHA-256 222d21a1bda3e193…

MALICIOUS

PDF

38.4 KB Created: 2021-06-25 16:36:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: afaaf7fb298a9920740fac9ed4619d07 SHA-1: 2c4ec943298edd957d576d31ffde4f90d48a3442 SHA-256: 222d21a1bda3e193062af5c090754a496a3f52550a826deb55a5781cebefdf04
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that are advertised as free game hacks and robux generators. These links lead to a known malicious redirector and IP-based URLs hosting further PDF files, indicating a phishing or malware distribution attempt. The document's content and embedded URLs strongly suggest a lure for downloading potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/robux-hack-download-pc-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/phantom-forces-roblox-hack-2021_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/prisonj-life-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/pubg-uc-telegram_GM1330123889.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/spiele-hacken-pc-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-virus_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/go-check-out-rob-lox-xyz-for-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-robux-2021-on-ipad_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/assassin-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.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/how-to-get-free-robux-without-human-verification_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/free-online-dater-clothes-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-script-roblox-and-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CD5 22884 bytes
SHA-256: f26e46bb39349ebe531383e0a940e3c796bbc6aba8fb00378d17272edc798695
font_01_sfnt_off00007029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7029 19456 bytes
SHA-256: 9af7050b878d6cab55911e9f2b55172943e13733601e95f22dde3bde214bcabf

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