Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d08043e41464c17…

MALICIOUS

PDF

47.6 KB Created: 2021-06-03 08:29:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3579b9481ffe77037536e963500a4684 SHA-1: a9dc649422abcbfc4a42c67a1674c6896400e344 SHA-256: 6d08043e41464c17f97f1f679a0cf6907a3309df40db35e1387726764db75116
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for a 'free generator / game hack' which is a common social engineering tactic to trick users into downloading malicious content. The heuristic 'SE_CLICKFIX' indicates the document instructs users to run commands, further supporting a malicious intent. The primary IOC is the URL leading to the apparent lure, which likely serves as a landing page for malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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 https://netcdn.online/app/479516143/free-minecraft-domain-game-hack PDF link annotation
    • http://www.ocic.hr/files/i-robux_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/tiktok-free-download-video_GM835599320.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-blogspot_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://freegiftcodes.euIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52BA 26008 bytes
SHA-256: 68af5a2cd9c54dbeeee73aa9404b50ea94949c9590b7fdff1d73316ba7ff405c
font_01_sfnt_off00008e31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E31 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off000097f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97F0 18140 bytes
SHA-256: 76c28744f84ad7629b6da3b9b5fa316c70ee5e9c8c86c1afc77ec6d129fcd0f8

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