Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eea7a67e2bf88aa…

MALICIOUS

PDF

42.5 KB Created: 2021-06-14 00:24:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 8751c4e78662902edd16b810a0bcd6e2 SHA-1: 200d1a13327ef22b69376e67a88e202145670cf9 SHA-256: 3eea7a67e2bf88aa4021b2b186d9bb04525fb6f3590bc31985913c09ddfa0658
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, including one specifically identified as malicious, which ultimately lead to pages offering game hacks or generators. The document body and extracted URLs suggest a lure for users seeking in-game advantages, likely leading to further malware downloads or phishing. No scripts were extracted, but the presence of embedded URLs and redirector links indicates a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/free-vip-server-roblox-game-hack In PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/cm-spins_GM406889139.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/original-roblox_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/hacking-curleyhairs-in-roblox_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/get-free-roblox-private-servers_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/minecraft-free-ios-2021_GM479516143.pdfIn macro / runtime command snippet
    • http://stimaimmi.ac.id/perpustakaan/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/minecraft-client_GM479516143.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/hack-para-roblox-pc_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.idIn macro / runtime command snippet
    • 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_off0000481c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x481C 25880 bytes
SHA-256: a1fd556179f20909f7c2719be9632582e96bf228aebb7a1247e5d9620a42b5bd
font_01_sfnt_off00008301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8301 18492 bytes
SHA-256: c1771e38e47f70d4d1a65a36e251d19cfd5d8120c02d48444b4cec837a0f1c39

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