Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ea72ec45ab1a42…

MALICIOUS

PDF

46.8 KB Created: 2021-06-03 16:08:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: c0d8ad40787e45a02416e916b1177ca1 SHA-1: eedb5f07cb575f88a03f738443d399b05be378a6 SHA-256: 68ea72ec45ab1a425c23264a16217356cac5899217847c4fbc29fa939c4a20bb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically targeting users interested in game hacks and free in-game currency. The primary redirector URL is https://netcdn.online/app/479516143/minecraft-building-hacks-game-hack, which is associated with malicious activity. The document body and heuristics confirm a lure-based approach to drive traffic to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/479516143/minecraft-building-hacks-game-hack In PDF document text
    • https://www.jcn.co.uk/uploads/files/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/tiktok-for-free-install_GM835599320.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/roblox-re_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-spins-for-coin-master-2021_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_004_off000050d0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50D0 30036 bytes
SHA-256: e0f04497dcdbd66830e24cff9f269118bed2d97042b025638590033baf8877d3
font_01_sfnt_off0000938b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x938B 18628 bytes
SHA-256: 03be4b6b10a4c687c6c89c16a3bf013511456428a76c01e3ee63370f4522cf94

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