Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ffcd46e1ad3348f…

MALICIOUS

PDF

40.9 KB Created: 2021-05-12 01:17:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 74397b2d227281b3b846d8efe3c1bbbd SHA-1: 110ab1f2312dbf7dc00aeaa6f105baa22b63c34c SHA-256: 6ffcd46e1ad3348fa29e11fed79662db209027b12fa34da85852d410182a59ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free generators' to lure users. The primary redirector URL is https://netcdn.xyz/app/479516143/can-you-get-minecraft-for-free-on-pc-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector workflow, likely intended to deliver a secondary payload or phish for credentials. The ML classifier also flagged this PDF with high confidence.

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/479516143/can-you-get-minecraft-for-free-on-pc-game-hack In PDF document text
    • https://itv-grabungen.de/images/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/rbx-robux_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-today_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/coinmaster-spins_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_off000046c3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46C3 24460 bytes
SHA-256: b29360e5ec5c672ef7b8cb4415e59278b939133ceea3e2855c55776e5aa7baf9
font_01_sfnt_off00007dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD0 18164 bytes
SHA-256: 8ea32a8e02995d89b02eafa4dcf94783bb214565530167096c35ff51f311a6e6

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