Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1cb83cb1e8162df…

MALICIOUS

PDF

34.9 KB Created: 2021-06-25 10:19:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4cd20f2a087b836da6e51e8b8b277d46 SHA-1: 1231806087d94010a305dce5b732cf3b51273c27 SHA-256: f1cb83cb1e8162df7fce2c544bd40b37f0f5b6293f3899ad745e52a55a03b47e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game codes and hacks to entice users. It contains multiple embedded URLs, including one pointing to an IP address, that likely lead to malicious content or further infection vectors. The ML classifier strongly indicates malicious intent, and the PDF_GAME_HACK_REDIRECT_LURE heuristic confirms the deceptive nature of the links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-roblox-game-card-codes-2021-game-hack PDF link annotation
    • http://183.91.70.11/repository/minecraft-for-ps3-free_GM479516143.pdfPDF link annotation
    • http://183.91.70.11/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/robux-hackaron_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/roblox-game-cheat-codes_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/roblox-sword-fight-on-the-heights-original-how-to-hack_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-copy-and-paste_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/hacks-on-mad-paintball-2-roblox_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/greg-hacker-roblox-account_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-no-survey-or-download-2021_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_off0000312a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312A 22208 bytes
SHA-256: 26ff5ac7fcc4e4b7ce15becfacf14b0cb02329f1f3bb2c880585c09ccb76d6c3
font_01_sfnt_off00006217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6217 19484 bytes
SHA-256: 98b7162d1dea44dd0e9f83004cf5c2b4230efd1f530770fe98a90252352cc491

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