Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5e7cf9f61fa24d5…

MALICIOUS

PDF

35.8 KB Created: 2021-05-20 21:08:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5e14c0795a2d25fea17953907a3350a0 SHA-1: 2e7455ad43182a390227a2696b03e05dc61fa04f SHA-256: c5e7cf9f61fa24d5209df0100c4462859214477040d29e511ed7b69d7e67810b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to a 'free generator / game hack' and includes a link that redirects to a malicious URL. The document body also contains phrases like 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', indicating a social engineering attempt to trick the user into visiting a potentially harmful site. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-bedrock-edition-download-pc-free-game-hack PDF link annotation
    • http://www.boic.nl/images/no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/coin-master-hack-extension_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_002_off0000335a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x335A 23896 bytes
SHA-256: 73e4c260adfe2e61834bc4f7ad4fcd7e69a16e626aad25c0b1f6868ab0b013b0
font_01_sfnt_off000068e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E4 18828 bytes
SHA-256: 57b97413d46eb8dd02e8163e11e04ebb18f1b46f22b88b993c8d7eb158a8ca98

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