Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30378980ba2aa3a…

MALICIOUS

PDF

36.8 KB Created: 2021-05-20 23:59:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 781233773d077992ec6d880894dd6e21 SHA-1: a82c2eda6f6e761a732dc4772bc1a4d5c2256256 SHA-256: c30378980ba2aa3a695d8268471dc8d50d77b4a290ccd99a0b921847ba9e9311
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures related to game hacks and generators. The document body explicitly mentions 'Minecraft Hacks Ps4' and 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the lure. The embedded URLs point to suspicious domains, likely serving as landing pages for malware or further phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/479516143/minecraft-hacks-ps4-game-hack In PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/minecraft-free-school_GM479516143.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_002_off0000345c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x345C 25928 bytes
SHA-256: a1e919d201cf9659b3c632579040f2d77c22f1a2f45c7380a1428ba0acda0599
font_01_sfnt_off00006fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE9 17956 bytes
SHA-256: 1505b4888ad519265159139ab27414f60b3662b7296b0e348d1315d60862a2b5

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