Malicious PDF — malware analysis report

Static analysis result for SHA-256 73f2daab9c80caa2…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 23:32:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7ac51bdf214f874f861bf29438fec145 SHA-1: b7bb6d9d8ba4ae69d3cd09c118701bb7aa59b434 SHA-256: 73f2daab9c80caa26b756c4157f8f59ea19c0341b37d9bd6f7cf278985991dd4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs and the nature of the lures suggest an attempt to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

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/free-t-shirt-roblox-adidas-game-hack In PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/roblox-cheats-commands_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/roblox-pics_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/como-tener-ropa-gratis-en-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/free-roblox-aim-bot_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/free-roblox-username-changer_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/coin-master-deals_GM406889139.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/coin-master-game-download-free_GM406889139.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3151 22220 bytes
SHA-256: 4fabd1bba958723967bbbc91770762f90f0e87fbcb4d53f363d5049ee264491b
font_01_sfnt_off000062b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B9 19216 bytes
SHA-256: edf27ae21583ce27eb79734a96f39244781a3891dab90c447f7efd0b53b0a1af

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