Malicious PDF — malware analysis report

Static analysis result for SHA-256 42c74fc9198a8593…

MALICIOUS

PDF

34.3 KB Created: 2021-06-26 17:42:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 056fa475ded1f4bd7e5e02bf5f49d3f7 SHA-1: d1ac32cc2c23029779d72624f0ee43e0652be32f SHA-256: 42c74fc9198a8593ce499f3a03bd3ebc195de4707ba5b609208964f4e375ce74
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to entice users. It contains embedded links directing to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The presence of multiple links to similar scam-related PDFs reinforces the phishing and social engineering nature of this document.

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-800-robux-codes-game-hack In PDF document text
    • https://doingimc.com/image/data/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-hacks-for-roblox-like-ambot-and-shoot-thro-walls_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/hack-dragon-ball-rage-roblox-2021_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://doingimc.com/image/data/files/www-roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/robux-hack-download-pc-2021_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-minecraft-addons_GM479516143.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_off00002f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F79 22080 bytes
SHA-256: 34dd503c2205bafc0316d1e0dc13f2321566cfc923835eae6b265674508c3a60
font_01_sfnt_off00005ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF9 19272 bytes
SHA-256: 9d1728afd0084c1edf2a4161b72e58d45ebd3667a4493962e2706936fd03d931

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