Malicious PDF — malware analysis report

Static analysis result for SHA-256 785ae5d5a7569bb3…

MALICIOUS

PDF

35.1 KB Created: 2021-06-27 11:41:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7de8f612910bcdf8321b40b2fa1e483c SHA-1: ba70429d8c21f8e38c74a977019cc3eec4558058 SHA-256: 785ae5d5a7569bb3bac67bc86612fe20af334b30db2dd22cafc669911a91af16
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and a document body that promotes downloading a 'Roblox Hack Client' or other game-related cheats. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs indicates an attempt to redirect the user to download potentially harmful content. The document body text, while garbled, clearly references game hacks and downloads, aligning with the heuristic findings.

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/roblox-hack-client-no-virus-game-hack In PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/mcpe-com_GM479516143.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/pokemon-go-free-account-generator_GM1094591345.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-robux-without-getting-banned_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_002_off00002ed4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2ED4 23776 bytes
SHA-256: 75734e542e3de30deb0d3b481a5dba53863ab13308cd656a9b244624296c4798
font_01_sfnt_off000063f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F0 19156 bytes
SHA-256: eb5541bcdfbe841ca5a3ba3c70daa53f0c9804489032f0cdf09655d5177511f8

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