Malicious PDF — malware analysis report

Static analysis result for SHA-256 6265c00351ecc3f9…

MALICIOUS

PDF

33.4 KB Created: 2021-07-02 06:26:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: dc7ca53983aa4a298cdc80b535645b61 SHA-1: 6a28abdd648506e11abc9d62e52de60f0e5d8c3d SHA-256: 6265c00351ecc3f93f00d191a273ed2d7987973842d565a5a425691320507680
220 Risk Score

Malware Insights

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

This PDF document employs a lure of 'Hacked Games Robux' and related terms to entice users. It contains numerous links to external PDFs and a primary redirector URL, indicating a phishing or scam campaign. The ML classifier strongly supports its malicious nature, and the presence of embedded URLs suggests potential exploitation or redirection to malicious sites.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/hacked-games-robux-game-hack In PDF document text
    • https://opac.umrah.ac.id/repository/roblox-ro-ghoul-cheat-engine-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-2021-website_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hacks-de-roblox-descargar_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/i-was-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-free-bc-tbc-obc-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-ninja-legends-groups-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-mods-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/apocalypse-rising-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-obby-for-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-recive-free-knives-for-murder-mystery-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-free-robux-by-number_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-diamond-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-plus-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-phantom-forces-anti-cheat-bypass_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-do-i-get-free-robux_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_off00002db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB1 21700 bytes
SHA-256: 1e992f905acde5f391106c87a8630dff7e54d01b47153abddb2c1388b7fdd6b2
font_01_sfnt_off00005d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0C 19156 bytes
SHA-256: 875b36f4625c7c395b7ce667e815ee95b0122564c464a694f593673990eac08e

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