Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfa4d726593baa32…

MALICIOUS

PDF

36.6 KB Created: 2021-05-22 13:23:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 6f42b3daaa698de0b79cf3bdec3bc26f SHA-1: 9a14f3d389dd9143e4badad003d89fe17bb41122 SHA-256: bfa4d726593baa325f00aa21252a88af3f22892417a363e6052623dd7180ffe3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures related to game hacks and free generators. The document body explicitly contains the URL 'https://netcdn.xyz/app/479516143/minecraft-free-install-game-hack', which is identified as a malicious redirector. This suggests the file is part of a phishing campaign designed to lead users to potentially harmful websites.

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-free-install-game-hack In PDF document text
    • https://www.impactfoods.co.uk/images/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/my-robux_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://discord.ggIn 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_off00003679.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3679 25372 bytes
SHA-256: 7dfacea22559ff7f682ed9426b54898bfa40c44e4a56473188abbf7911d9d8aa
font_01_sfnt_off00007003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7003 17644 bytes
SHA-256: 633b33bb140344f1759210963491f1aee0e41bd13e53d96deaa22883d252c2f8

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