Malicious PDF — malware analysis report

Static analysis result for SHA-256 c18497771a529c3e…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 07:22:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 0851a8c76d04414d072104e17da7b23d SHA-1: d1b0cbeebc7c5013564815a8bb6716465b26f4e1 SHA-256: c18497771a529c3e7ad6959e74bd4be50d6158a62c739fe29716fa94d7d1c571
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains lures for game hacks and free items, directing users to external URLs. One URL points to a known malicious redirector, and another uses a raw IP address, indicating a high likelihood of malicious intent. The document's content and embedded links suggest it is designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.tw/app/479516143/how-to-get-minecraft-bedrock-edition-for-free-game-hack In PDF document text
    • http://110.232.83.89/slimsppks/repository/wurst-mc_GM479516143.pdfPDF link annotation
    • http://110.232.83.89/slimsppks/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/gain-robux_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/tiktok-free-recharge_GM835599320.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/btools-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-games_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_off0000318a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318A 22716 bytes
SHA-256: d429b72cf271e757fc660fb20e4d695dbfc8d43aaa80efc8ac510af7b030b951
font_01_sfnt_off0000638d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638D 18720 bytes
SHA-256: 8749f690aacce1ff2d40288e6cd65b377fcb09a0c55c4616b39fbcf3e372c4de

Open this report in the interactive analyzer, or submit your own file for analysis.