Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb93b8714b9366d…

MALICIOUS

PDF

44.8 KB Created: 2021-05-13 16:37:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 4a3014f60d9a2f833b877512cb5d6649 SHA-1: e2bf307d7c3f02b7402261ba2e20d0a550242d38 SHA-256: aeb93b8714b9366d4db904c0d09609996375c276077e0878f3d3a42523bd0146
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'game hacks' and 'free generators'. The primary malicious URL identified is https://netcdn.xyz/app/479516143/minecraft-name-tag-hacks-game-hack. The presence of a 'download button' heuristic further suggests a lure for users to click through to a malicious site. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/479516143/minecraft-name-tag-hacks-game-hack In PDF document text
    • http://w-i-r.de/images/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/freerobux-co_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://w-i-r.de/images/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://w-i-r.de/images/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://w-i-r.de/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/roblox-free-hair-codes_GM431946152.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
font_00_sfnt_off00004898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4898 25780 bytes
SHA-256: 9c8d1f00e9f0499eb34280d155b431a4f2305a9e2f5973d34f11d2fcd2967fd0
font_01_sfnt_off000082eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82EB 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD6 18288 bytes
SHA-256: eb7ed4260d6d64c3cd9f3242d6af3157cea31df7eff6e4be90ec8e6c005c47d1

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