Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1207a52b310a9a…

MALICIOUS

PDF

39.5 KB Created: 2021-05-24 05:26:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 96e42d4a808023556914060251dd1241 SHA-1: 7efd94f562975515ddfde9aee1e7ae0ac9b32ceb SHA-256: ec1207a52b310a9ad68791d5dbb184fb0a5595b9b718b39d2a3c35cc0580383f
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector for 'free generator / game hack' content. The document body also contains a call-to-action phrase 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the lure. The presence of multiple embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect the user to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/free-minecraft-skins-game-hack In PDF document text
    • http://manfeld.dk/images/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/free-tiktok-views_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000357a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x357A 25736 bytes
SHA-256: dd5d55beebdf5947e468faec47e4845f7e692912ebc2ea1b62c964fbccec7d37
font_01_sfnt_off00007035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7035 3068 bytes
SHA-256: 97bdad51cdb6da32e082b5e8d119faf3261bf2b9d96dd65a3fa52676cb785565
font_02_sfnt_off00007ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC0 17740 bytes
SHA-256: 14879269a8559ae987a62032ee6d1223d63a0cf7b4214af4691cfda5a28d5ffa

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