Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e33ca3aac53e4f…

MALICIOUS

PDF

36.6 KB Created: 2021-06-29 16:57:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a509f13d2e0f7e3bb4610ea8aee92e7b SHA-1: df075dfcb179b47c42be0684782a3a6a1b4eb038 SHA-256: f6e33ca3aac53e4f6d576d7178fd15337c22699c47aa844cbd9a8bd172209c7e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically advertising game hacks and cheats. The document body and heuristics indicate a lure for users interested in game exploits, likely leading to further malicious content or downloads. No scripts were extracted, but the presence of malicious redirectors and the lure suggest a phishing or malware distribution attempt.

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/when-i-start-cheat-engine-roblox-shuts-down-game-hack In PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/roblox-broken-bones-4-cheat-engine_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/descargar-hacks-en-roblox_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/how-to-cheat-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/free-roblox-gift-card-codes-2021-october_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/roblox-bin-hacked_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/roblox-app-free-download_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/cheats-for-the-plaza-roblox_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/biggerhead-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/roblox-on-ps4-free_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/hack-coin-master-game-apk-download_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_off0000346b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x346B 23588 bytes
SHA-256: 40f91df0117ca0ae2abe5ab6952bea840889f1a0994764d5339224c35ea252f1
font_01_sfnt_off000068c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C6 19548 bytes
SHA-256: b64facd476bd88bb0289b275c5668627f82aaca65f6558def88d7e9ea2e96640