Malicious PDF — malware analysis report

Static analysis result for SHA-256 adf2027cd1f0d01a…

MALICIOUS

PDF

41.8 KB Created: 2021-05-11 12:35:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b1fb2ba4f1c03d6bfc1f385d96fedb70 SHA-1: 440d890aefa49171bfd27db26215f0a6ed941ec5 SHA-256: adf2027cd1f0d01ad91fc7a3a37a1ce35794b5cceece1b84b8fb43c9728a2214
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of "free generator / game hack" to entice users. It contains multiple embedded URLs, including a primary malicious redirector at `https://netcdn.xyz/app/406889139/free-coin-link-for-coin-master-game-hack`. The document's structure and embedded links strongly suggest it is designed to redirect users to potentially malicious websites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/free-coin-link-for-coin-master-game-hack In PDF document text
    • https://www.manmed.info:443/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/robux-free-online_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-master_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/card-hack-for-coin-master_GM406889139.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
stream_003_off000049fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49FD 24456 bytes
SHA-256: d94a07e37883c43ab11a93f10b9d267073f4d1d722a9dc78ca73e8814f0024a7
font_01_sfnt_off0000822b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822B 17880 bytes
SHA-256: 0625e4176a7f53d001741f6455d720615efffd3608056e1f92d89c9c6799a538

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