Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cf0d3f071f6f562…

MALICIOUS

PDF

44.3 KB Created: 2021-06-07 06:49:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1b74a4d89879ea6b8b9372370f083870 SHA-1: e853aa4d4613ab740d54a170fc0ccf13b5b5e5cf SHA-256: 4cf0d3f071f6f5623986b86d5416ddef9e1595a749a97172c7595d513556b1a3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors, specifically advertising 'Roblox Hack' generators. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though partially corrupted, also contains the URL for a 'roblox-hack-32-bit-game-hack'. This indicates a social engineering lure to trick users into downloading or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/roblox-hack-32-bit-game-hack In PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/hack-roblox-click-tp_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/roblox-exoliner-free_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/descargar-roblox-hackeado-para-pc-2021_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/hacks-for-mad-city-roblox_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/how-to-sell-shirts-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/free-roblox-money-maker_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/roblox-hack-mad-city-2021_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/hack-roblox-windows-10-2021_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/2021-pastebin-free-robux_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/how-to-hack-someones-profile-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-easy-on-android_GM431946152.pdfIn PDF document text
    • https://www.approachpeople.com/wp-content/uploads/fsqm-files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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
stream_004_off00004fd7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FD7 25324 bytes
SHA-256: c5518dd0c2b9019166789910d30de3c88c464fda0c105ebbca29ce6f803891b2
font_01_sfnt_off00008919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8919 18736 bytes
SHA-256: e8bb382923e06d5b337190d6dc41e162122520f8559da9eb778c385e2bd93aed

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