Malicious PDF — malware analysis report

Static analysis result for SHA-256 88ab2392072f81e5…

MALICIOUS

PDF

45.4 KB Created: 2021-05-15 01:46:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 088e8d9cb47d73cb0abc2b5478da3258 SHA-1: 2a6938b9856e9aa36cccc4167813d305a8736674 SHA-256: 88ab2392072f81e50ad277ee6258869ab79be903998564e4e87930941fe08874
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' or 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-make-a-group-on-roblox-for-free-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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.xyz/app/431946152/how-to-make-a-group-on-roblox-for-free-game-hack In PDF document text
    • https://www.bmta.co.uk/images/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/coin-master-link-app_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/free-robux-working_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/www-roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/mcpe-com_GM479516143.pdfIn PDF document text
    • https://www.bmta.co.uk/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/www-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • https://www.bmta.co.uk/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000469a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x469A 26140 bytes
SHA-256: b99e19fd9cb32e56a2c3983cb4c22d6c9d8a6905a187fd254a97f4473745f79a
font_01_sfnt_off000082b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B2 2956 bytes
SHA-256: bab8933fc39dc331bc4c1c904a82b1432ab2e02478fa0a59453c98c5c231da8d
font_02_sfnt_off00008cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD1 19020 bytes
SHA-256: 618aa5fa104ea73151876125e2b85ad7dcdc11323aacc6b5e0056594e37eb48c

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