Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ce0082901d49fce…

MALICIOUS

PDF

41.9 KB Created: 2021-05-16 00:03:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f00b93bb8104d822294bb578c7cd4df7 SHA-1: c3d90b2ee522954f37d93c8bd6eea26fb2dda589 SHA-256: 8ce0082901d49fcee682aa612b4c30079895924db9e2f532ec5bd4216f4fe4fa
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' or game hacks. The primary lure URL is https://netcdn.xyz/app/431946152/roblox-free-robux-website-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/roblox-free-robux-website-game-hack In PDF document text
    • https://mbbs.hr/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/robux-website_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046fa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46FA 24992 bytes
SHA-256: a7b6208860a2a5b5723a182956a5f5119193136cb6093e8a7c06b6cb10c60d74
font_01_sfnt_off000080c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C2 18508 bytes
SHA-256: fbcd203c7e924a0ebec4ef4aa0eb55ec8b14d1abcc2767c4f5d3ad1ccc86f8e3

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