Malicious PDF — malware analysis report

Static analysis result for SHA-256 582335f27083aef0…

MALICIOUS

PDF

34.8 KB Created: 2021-07-10 02:59:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 722e9da1eeda797b31bf01130e6152a4 SHA-1: fdc7def7b7eceb7860df26ddb734d2e760ef644b SHA-256: 582335f27083aef0294aada66662fb0ed4f6a950ba2e68dde2214921ee6dd499
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free items, such as 'coin-master-free-spins-app-game-hack'. These links redirect to known malicious infrastructure, indicating a lure to potentially download further malware or engage in phishing. The document's structure and embedded URLs strongly suggest a social engineering tactic to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/406889139/coin-master-free-spins-app-game-hack In PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/hack-into-roblox_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/best-roblox-hack-guis_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-can-i-get-robux_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/fly-hack-roblox-weight-sim_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/roblox-jailbreak-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-get-free-admin-commands-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/best-roblox-outfits-free_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-robux-hack-in-one-go_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/roblox-infinite-jump-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/who-to-hack-in-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_off00003328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3328 22672 bytes
SHA-256: c18a220411f3c76ca8638a7167f22ac0ac899292e183121c714163b2f2f9391d
font_01_sfnt_off000065e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E2 18176 bytes
SHA-256: 4f2c7f50c50d911764fc5880fa9a71240a98bde4d6a03cad0f4e23413d6df79f

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