Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70536cdb8689f34…

MALICIOUS

PDF

42.8 KB Created: 2021-05-14 06:19:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: d9ee1cecd4ab6956f756848fd239ffab SHA-1: ef45171fe86649667bcc97e91175342d453771b1 SHA-256: e70536cdb8689f3460544550d55abad8cc0a62d363276fd5d764a19e36e38e68
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that point to known malicious redirector infrastructure, specifically targeting users with lures related to game hacks and free currency. The document body, though partially corrupted, contains references to these lures and the malicious URL. The presence of embedded links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

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/how-to-get-free-snacks-in-coin-master-game-hack In PDF document text
    • http://www.museodopobo.gal/web/uploads/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/worst-client_GM479516143.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/robux-place-rewards_GM431946152.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/minecraft-net-free_GM479516143.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.museodopobo.gal/web/uploads/files/roblox-exploit-download_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
stream_003_off00004af8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AF8 25228 bytes
SHA-256: a9424cfb38bb59c03815aaa67a3f74cd8ab8e40a141e2b1ab8c17fa2d050d30b
font_01_sfnt_off000085a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A2 18044 bytes
SHA-256: afdb62a7dd2f220a912b3040110964a0dfec84e69cae224ad3fedfc94188d243

Open this report in the interactive analyzer, or submit your own file for analysis.