Malicious PDF — malware analysis report

Static analysis result for SHA-256 8621301c16ad9f2b…

MALICIOUS

PDF

34.5 KB Created: 2021-07-01 06:16:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 46b839fb6c84692bf0b312e4b8b3e7c3 SHA-1: 756fc4f1bcd90c353995192742dd1d3552affd53 SHA-256: 8621301c16ad9f2ba1491a44fd05d0d32c5311c1e0559d2283eaae42153930c3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure is a link to 'netcdn.co', which is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

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/hacks-roblox-jailbreak-descargar-game-hack In PDF document text
    • https://www.metal.hr/files/junio-2021-hack-robux-en-roblox_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • https://www.metal.hr/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-redeem-codes-for-free_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/claimrobux-net_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-become-headless-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-hack-goggle-systems-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-roblox-card-codes-not-used-2021_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/what-to-do-if-my-roblox-account-gets-hacked_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/robux-adder_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-admin-hack-script_GM431946152.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
font_00_sfnt_off00002f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F18 22456 bytes
SHA-256: bba85cdf97e281878cc56587221b4824a10ffff03c2730d7e2d5797ff372b2a3
font_01_sfnt_off0000615c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615C 19108 bytes
SHA-256: 1ca7a74ae2e60412d31020d943ab39d878ddc535f0e77fbffbb0e16534ab4cf8

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