Malicious PDF — malware analysis report

Static analysis result for SHA-256 afb3796af74f7c2e…

MALICIOUS

PDF

35.0 KB Created: 2021-07-02 06:55:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1fa9ecc0db3091a56351407d24037bf7 SHA-1: 2145ca1d1a99ec94f5ed3060d18550d75374bc4b SHA-256: afb3796af74f7c2edeedbf64428e43bfaeca417f03e70f074f48b8cbe57ab6dd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure for game hacks or generators, likely intended to trick users into downloading malware or engaging in fraudulent activities. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly suggest a phishing or malware distribution attempt.

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.co/app/431946152/video-hacker-roblox-francais-game-hack In PDF document text
    • http://www.salwangurgaon.com/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-with-survey_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/pretty-cheat-codes-roblox-id_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/cheat-monnaie-roblox_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-get-free-admin-on-any-roblox-game_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_off0000318a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318A 22208 bytes
SHA-256: 44a5a6a7ec405be31b84a46012f7e9f10b0a4a3b7e1c08bcdb5c1994785fed18
font_01_sfnt_off00006307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6307 19248 bytes
SHA-256: 680406f9c1689a8c736c5ccd7edc910e46a99cdb7a40e79d43e17869b24eddb0

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