Malicious PDF — malware analysis report

Static analysis result for SHA-256 929c685295751068…

MALICIOUS

PDF

33.9 KB Created: 2021-06-20 12:43:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b242cbae72ccc494af581968de7f7b96 SHA-1: 63fbccfe2225ef5ae613439816006ebc81c3f8bf SHA-256: 929c685295751068a445fc167fd5beb4d2e7b32d6674ef46fb727a483229bc59
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary link, http://netcdn.co/app/431946152/how-to-make-a-dll-hack-for-roblox-game-hack, is presented as a 'free generator' and is associated with a critical heuristic firing for a game hack redirect lure. While no scripts were explicitly extracted, the nature of the links and the 'download button' heuristic suggest a workflow designed to trick the user into downloading a second-stage payload.

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-make-a-dll-hack-for-roblox-game-hack In PDF document text
    • http://bufbd.org/images/pokemon-go-free-spoofing_GM1094591345.pdfIn PDF document text
    • http://bufbd.org/images/hacks-for-roblox-2021-admin-hacks-dowload_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/how-to-get-free-robux-pastepin_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/roblox-counter-blox-skin-hack_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/island-life-paradise-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/roblox-murder-mystery-2-halloween-hack-candy_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/robux-today_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://bufbd.org/images/roblox-speed-and-jump-hack-2021_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://bufbd.org/images/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://bufbd.org/images/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bufbd.org/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bufbd.org/images/roblox-hack-users_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/what-will-happen-if-i-use-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/free-promotional-code-roblox_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_off00002c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5B 22512 bytes
SHA-256: 66574de9df698938e363a87f0222df85389d23188a746e9f562fb24170a31527
font_01_sfnt_off00005e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E98 19348 bytes
SHA-256: 9f3ec6b2bd9ebd869067192ab89fc2bacc95df1b76bd99763d73ab53ec2f8cce

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