Malicious PDF — malware analysis report

Static analysis result for SHA-256 43bcf6bee514bbca…

MALICIOUS

PDF

34.1 KB Created: 2021-06-23 10:15:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d091a5f4cfe5ae1197d95ef20dab465a SHA-1: 7a5ce10b050e6b91be811b354b8d11ba11551abf SHA-256: 43bcf6bee514bbca40da801c96f2129de5af318413dc640e1d36ec9d5a3e0d2e
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. The document body explicitly mentions 'How To Hack In Someones Account On Roblox' and includes URLs that lead to such content. The primary function appears to be redirecting users to potentially malicious websites.

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-hack-in-someones-account-on-roblox-game-hack In PDF document text
    • https://yowchang.com/image/data/files/undetectable-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/free-robux-cards-2021-codes_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/hacks-fpt-roblox_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • https://yowchang.com/image/data/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • https://yowchang.com/image/data/files/free-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://yowchang.com/image/data/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • https://yowchang.com/image/data/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • https://yowchang.com/image/data/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://yowchang.com/image/data/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://yowchang.com/image/data/files/free-coin-master-spins-link_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_off00002e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E74 22084 bytes
SHA-256: 40b6784670050366ffb904dc5de68f395edde43f98ee91fd973a26fd494b1d9a
font_01_sfnt_off00005f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F74 19324 bytes
SHA-256: 320d1e34fc4b82d7eb114e60ca4bdae7606c32b801bcf08b3d590b3278c58a08

Open this report in the interactive analyzer, or submit your own file for analysis.