Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea38f8b253dd7ab…

MALICIOUS

PDF

45.1 KB Created: 2021-05-11 03:40:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 95f9af6bf22f20dea1c337c36fddf104 SHA-1: e9e2b44c250db02742e6eab45d1c5174d10b4fe8 SHA-256: 6ea38f8b253dd7abe418abce1b2380c9b2f8cfed531ab8d30bb4d1a0b248ebcb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one explicitly identified as a lure for game hacks and another flagged as a malicious redirector. The document body text, though partially corrupted, contains a title related to 'Roblox' and a URL that aligns with the heuristic findings. The presence of these links and the lure suggest an attempt to redirect the user to malicious infrastructure, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/431946152/how-to-hack-roblox-2021-game-hack In PDF document text
    • https://liftkos.com/images/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://liftkos.com/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/robux-in_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://liftkos.com/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/minecraft-apk-114-4_GM479516143.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_off00004938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4938 24132 bytes
SHA-256: ef3d6ea463f0006b1249b63e7f8fe3fe4c96d714b7e7306a2560c7e50d1eb7b5
font_01_sfnt_off000080aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AA 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD3 18748 bytes
SHA-256: 82830e686af2a9787477f8716b243dfdc4e826425849e85a18f820c98dc205f5

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