Malicious PDF — malware analysis report

Static analysis result for SHA-256 5279c5d59f9845f4…

MALICIOUS

PDF

33.6 KB Created: 2021-06-25 11:54:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: abcebd64b5a196bd455e164d0b2ffa4f SHA-1: a4e886594f1873606a2627b4cb973ce3d676964d SHA-256: 5279c5d59f9845f4530b7b0382f8ad204a205dba44300eac23830013d0cc775d
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 Robux' or game hacks. The primary link, http://netcdn.co/app/431946152/free-robux-gift-card-codes-2021-not-used-game-hack, is flagged as a malicious redirector. This suggests the document is designed to trick users into visiting potentially harmful sites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-robux-gift-card-codes-2021-not-used-game-hack In PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/free-robux-generator-no-survey-no-hack_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/wls3-roblox-hack_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/codes-to-get-free-money-on-roblox-treasure-hunt-simulator_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/free-robux-io_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/roblox-free-games-to-play-online_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/robux-hack-place-download_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/cheat-engine-64-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/infinite-jump-hack-for-roblox_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/how-to-get-real-robux-for-free_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/roblox-free-outfits-avatar-girls_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/roblox-hack-kostenlos_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/roblox-cheat-engine-gun-script_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/roblox-speed-hack-youtube_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/how-to-teleport-in-free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/roblox-jailbreak-free-keycard_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/how-to-hack-one-mill-in-roblox_GM431946152.pdfIn PDF document text
    • https://prom2m.ru/wp-content/uploads/fsqm-files/free-robux-no-human-verification-2021-generator_GM431946152.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_off00002aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAB 22628 bytes
SHA-256: af8c6b0caa43cfbbbd425617d06b3da13ddede33d9480506befc84c5bcf866f4
font_01_sfnt_off00005d06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D06 19516 bytes
SHA-256: 26f7673c4e6cee83c4340a732143e790e6cb1a5d32285cba2330ed9e6a5942e3

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