Malicious PDF — malware analysis report

Static analysis result for SHA-256 eace80318bff7595…

MALICIOUS

PDF

44.2 KB Created: 2021-05-11 15:09:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ff4389adcbb58852c3643d8a0373d580 SHA-1: 8173e235fadc9aa239db3abc1db9dd1ff3764705 SHA-256: eace80318bff75957ba677804fd913901f502eeaf223224340d93ecee7856b32
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' and 'game hacks'. The primary lure URL is https://netcdn.xyz/app/431946152/rbxoffers-com-free-robux-game-hack, which is flagged as a malicious redirector. The document's content and embedded links strongly suggest a phishing or scam attempt to lure users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/rbxoffers-com-free-robux-game-hack In PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-free-hats-on-roblox_GM431946152.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_off00004a67.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A67 28040 bytes
SHA-256: d4263abee3af0d09de38a4c7ba72d7fb04740e590d13e75c3600081e89b5ade4
font_01_sfnt_off00008a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8E 18276 bytes
SHA-256: 33587a0de9fe244dccc6feb4df3ae622cc669a227e305313b85abf77a5936fbf

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