Malicious PDF — malware analysis report

Static analysis result for SHA-256 b93eac81157444d0…

MALICIOUS

PDF

35.2 KB Created: 2021-06-29 11:20:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 30451c86aab033beee16a8c5e22c0cd4 SHA-1: f619fa857fd3218662e09730fce5d353f87df0df SHA-256: b93eac81157444d03c87e07a91bae69f9cce1291f8772baab4a7c7c2de29b518
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically designed to lure users with promises of game hacks and generators. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malicious content or malware download. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/how-to-advertise-your-roblox-game-for-free-game-hack In PDF document text
    • https://sanjoseelectricians.net/images/robloc-robux-hack_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-make-something-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-robux-codes-2021-on-iphone_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/earn-free-robux-scam_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-hack-build-tools_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-scipt-loader-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-hack-your-rank-on-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/good-roblox-roghoul-hacks-to-get-rc_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-robux-generator-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-redeem-code-roblox-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/cheat-engine-64-roblox-noclip_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-hack-in-roblox-2021-mac_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/robux-hack-my-dudes_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/how-to-make-a-free-ad-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-robux-pastebin-hack_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-roblox-codes-that-work_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-robux-videos-for-robux_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-build-a-boat-for-treasure-hack-download_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_off00002fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBA 22452 bytes
SHA-256: 0a792d4baec88c6d5a16a658ca643935eefb04355dd59c752784b3d4349a8fab
font_01_sfnt_off00006204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6204 19888 bytes
SHA-256: 4738dc3115fa1c30267c7be43d9760802624b622f60da741ebf42a57954904a9

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