Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3fcea9c67860e44…

MALICIOUS

PDF

50.5 KB Created: 2021-05-11 15:38:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1e9b5457151adfe384b9c6ef0689862e SHA-1: dc507f3c94173a30c6279cad81deac7557485235 SHA-256: b3fcea9c67860e44f9108caaac74ff74cfb5346d548d59a6e52dd9e06345ea72
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks'. The primary lure URL is https://netcdn.xyz/app/406889139/free-spins-coin-master-without-completing-offers-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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/free-spins-coin-master-without-completing-offers-game-hack In PDF document text
    • http://maxvanberchem.org/images/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/robux-website_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://maxvanberchem.org/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://maxvanberchem.org/images/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • http://maxvanberchem.org/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://maxvanberchem.org/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BEF 24056 bytes
SHA-256: 0ccaabc6efe1d61de13bbc14dc1b2a147f19347ad5b378f8339aad8103dd7be9
font_01_sfnt_off000082cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CC 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C79 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_03_sfnt_off0000a104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA104 19012 bytes
SHA-256: 94ec3d6dd7afe22736a4406c77b2a22b2801cceff0f201dfa37f6b15e40fa38c

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