Malicious PDF — malware analysis report

Static analysis result for SHA-256 2becd4713dea1150…

MALICIOUS

PDF

44.9 KB Created: 2021-05-16 16:27:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 87187b83dc783ad948412db1405b1863 SHA-1: d98c370a14306b003a9b676c0d458a4575402b86 SHA-256: 2becd4713dea1150d5cfe1908080f67d00a1a63de53fdfd52e2e96082b00d9de
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 generator / game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/406889139/get-free-spins-from-coin-master-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at tricking users into visiting malicious sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/get-free-spins-from-coin-master-game-hack In PDF document text
    • http://dieter-sauter.com/images/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-comcom_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/ww-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004886.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4886 26468 bytes
SHA-256: 8d83bf0bc2810bc03792fd61c296daee91824fa37e54684ea878667ab369ead3
font_01_sfnt_off00008354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8354 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3F 18148 bytes
SHA-256: 59e439861be8937ec1f5e2759ea157bb970f1ae79ac9370d5f6aa547a2452cd1

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