Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ad28209a90e1da…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 19:12:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 0f4345ef1f934926ba4812ffcb4e838f SHA-1: e061d44542a742c3b173f6de3c654682204fefce SHA-256: 33ad28209a90e1da5a1a095c7562e358d4686db0f1e08e891dbb4ad8f0d1b99f
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to websites promising free game items and hacks, including a known malicious redirector. The document body and heuristics indicate a lure for game-related exploits, likely leading to malware or phishing. The presence of an IP address in a URL further suggests malicious intent.

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.tw/app/479516143/free-minecraft-texture-packs-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/doge-roblox-hat-free_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/city-17-roblox-token-hack-dll_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/gamekit-didnt-give-me-free-800-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-stage-7_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-twitter-codes-for-assasian-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-generator-witout-paying-or-doing-nything_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/descargar-hack-de-roblox-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-robux-hack-online_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-make-anything-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-radio-games_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/changing-your-walkspeed-in-roblox-cheat-engine_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/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-im-freaking-out-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/can-u-get-free-robux_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_off00002f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4A 23364 bytes
SHA-256: 6dd198de5b45ac8643230eab8e8a122aa9d66ec075e5861ab3cbe5a1693f8d7c
font_01_sfnt_off0000627c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627C 18532 bytes
SHA-256: 8f6189a23e9f62d3df147f8e0225ea745e729700ec556be14db5ff79dd0eb908

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