Malicious PDF — malware analysis report

Static analysis result for SHA-256 a652f48099c14817…

MALICIOUS

PDF

34.6 KB Created: 2021-06-20 17:59:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5459cba032d06732472d0c5ec4a1fe56 SHA-1: ddecfd93cec208d236b01b5f34a277e59030080c SHA-256: a652f48099c1481730819970d60510af295f71fde860cfb2a32ea4ac58175a34
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as free game currency or hacks. The ML classifier also strongly indicated maliciousness. The presence of these links suggests the document's primary purpose is to redirect users to sites that likely host further malicious content or phishing pages.

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-robux-link-game-hack In PDF document text
    • http://gaeconsultores.cl/images/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/roblox-mad-city-level-100-hack_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/free-vip-server-for-roblox-gravity-ship_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/is-there-anyway-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://gaeconsultores.cl/images/your-life-free-trial-has-expired-roblox_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-daily-free-spins-blog_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/free-robux-hack-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/ultimate-trolling-gui-roblox-download-free_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/project-alpha-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/auto-clicker-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://gaeconsultores.cl/images/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/roblox-free-robux-obby-working-100_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/roblox-bus-simulator-hack_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_off00002f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F24 22868 bytes
SHA-256: a1caaac0d9a086ec83955ffd8b48ebee5284b40a4d3a221f369d90a0b00746d5
font_01_sfnt_off0000623f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623F 19008 bytes
SHA-256: a11a737a93c2cddb47bbb5a91c346e1b782ee8df03973ee462993f1f8904f3c0

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