Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bbb58e0303854ff…

MALICIOUS

PDF

42.4 KB Created: 2021-05-19 06:52:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 618affedee4498e07934fb4941fdcfb4 SHA-1: 5f6d7bf1eef8cb95a528224d42334ff6b0194002 SHA-256: 3bbb58e0303854ff1bb45da94a00e9762d02e38159a53900d4fd75d17bcda723
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary link directs users to a site promising free game hacks, which is a common social engineering tactic. Although no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest malicious redirection and potential payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/1094591345/pokemon-go-free-and-nintendo-switch-game-hack In PDF document text
    • http://s-punkt-objects.de/images/coin-master-villages_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/roblox-system_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://s-punkt-objects.de/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://s-punkt-objects.de/images/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://s-punkt-objects.de/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://s-punkt-objects.de/images/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/coin-master-free-spins-link-today-haktuts_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_003_off00004aaf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAF 24452 bytes
SHA-256: dbc65c46a6f23cf2bcbf5915331736db0957d30ce2a0aadd82157ec90a5ce793
font_01_sfnt_off000082d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D9 18568 bytes
SHA-256: e80e682984d5551d9d573f5f51949b1eedc690bac8ce722bdb9acd0bfdb6f025

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