Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f985e4a7767127…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 02:04:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0df306c72e309a4391b065d288dde9bc SHA-1: 24205380d07dff824c8462861089d50f19b50d4a SHA-256: e7f985e4a7767127d8731a39596349b1922cfef0d827c1bf39944bb1893bc26e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector at http://netcdn.co/app/431946152/how-to-get-free-bc-on-roblox-2021-game-hack. These links are presented as lures for game hacks and free currency, indicating a social engineering tactic to trick users into visiting potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious.

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/how-to-get-free-bc-on-roblox-2021-game-hack In PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/account-hacker-v2-0-roblox_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/hack-mui-dragon-ball-n-roblox_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-commands-roblox_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/hack-injector-for-roblox_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/mobil-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/coin-master-hack-lost-world-2021-com_GM406889139.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_off00002f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1B 22264 bytes
SHA-256: 51051f28c5be6036e3fd6756d63a6b49cd944b3192c9482677ca144d2e88506b
font_01_sfnt_off000060da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DA 19320 bytes
SHA-256: 0614787847ec447f721494fe15349f2f03e6fafe2a6571fbc52abb701ebac523

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