Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cd95f56f6caf629…

MALICIOUS

PDF

32.9 KB Created: 2021-06-25 23:04:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ae0a77fa711b53c39aa60fb07cace673 SHA-1: 8029fa671c650bdda18623c673252e1c52ebf7b0 SHA-256: 7cd95f56f6caf629ed8e30718b237c150dfd98599758a4d74c48617bd9b2a0db
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that lure the user into believing they can obtain free in-game items for Roblox. The primary link, http://netcdn.co/app/431946152/roblox-free-eminem-clothes-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malicious content or malware download. The document body's content and heuristic firings confirm this malicious redirection pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.co/app/431946152/roblox-free-eminem-clothes-game-hack In PDF document text
    • https://sanjoseelectricians.net/images/red-boy-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-accounts-for-roblox-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-cheats-for-robux-no-download_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-robux-hack-glitch_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-do-you-hack-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-free-stuff-on-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-safe-hacks_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-robux-codes-2021-for-adopt-me_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-btool-hacks_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/ban-hack-roblox-trackid-sp006_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-sdcript-executer-for-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/cool-roblox-high-school-cheats_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-robux-hack-free-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-a-free-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/www-roblox-hack-robux_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/gamesyourday-free-robux_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/santix-roblox-hack_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-sword-hacks_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
font_00_sfnt_off00002a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A33 22196 bytes
SHA-256: 68ccd8169b59bce93ea5d7ff527a453b607b1d94d68e9d8d345775b1adc91770
font_01_sfnt_off00005b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B74 19300 bytes
SHA-256: e5f6b2bcd5d3b0bebe869a6d1b5785c74dcd15ea7b7aaaed893dd3b3e78b6db3

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