Malicious PDF — malware analysis report

Static analysis result for SHA-256 3271729bcc7eaba4…

MALICIOUS

PDF

37.3 KB Created: 2021-05-21 02:50:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c9348ca4f1ec8ca7f7bccbf410eb3f16 SHA-1: eeb51ec4fb757c3d6f6da5591d9ae09076776fa5 SHA-256: 3271729bcc7eaba4eb6521e9f9ade49fdc4c23c4ed83e11a3a06daa87cc1e3fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The document body explicitly mentions 'How To Hack Roblox Accounts For Robux' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR', indicating a phishing or scam attempt. The embedded URLs are designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9616

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-accounts-for-robux-game-hack In PDF document text
    • https://www.delhihomeoboard.in/uploaded_files/userfiles/files/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • https://www.delhihomeoboard.in/uploaded_files/userfiles/files/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • https://www.delhihomeoboard.in/uploaded_files/userfiles/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • https://www.delhihomeoboard.in/uploaded_files/userfiles/files/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.delhihomeoboard.in/uploaded_files/userfiles/files/how-can-i-get-free-robux_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_off0000328c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328C 29308 bytes
SHA-256: fcc2b5172ba621b8e47729ebdeb4f50030c571ea0a1d1cd8d69327c1c6331906
font_01_sfnt_off00006f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F34 18756 bytes
SHA-256: 937dc084e295f5db9e9abf98e8d9ece9a75bef1f1a22520950dbcf80e1ec543e

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