Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5a45df8b2ec92ca…

MALICIOUS

PDF

34.2 KB Created: 2021-06-29 01:57:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 711535830bbf019ccd22cec50bcac0dc SHA-1: 5abad55356fd05a629b00fdcf7fc1cee257a477a SHA-256: b5a45df8b2ec92ca1547f41fc536dcb8998f08c29de342d11d46762f5d414f9b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors and websites offering game hacks and cheats, such as 'free-roblox-promo-codes-2021-august-game-hack'. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs and a download button lure suggests an attempt to trick users into visiting these sites. No scripts were extracted, but the overall pattern points to 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/free-roblox-promo-codes-2021-august-game-hack In PDF document text
    • http://loriginedupain.org/images/roblox-how-to-get-passes-for-free_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://loriginedupain.org/images/roblox-guest-clothes-free_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/roblox-big-paintball-hack-website_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/roblox-weight-simulator-3-cheat-code_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/roblox-hack-tool-no-survey_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-hack-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/seitama-roblox-free-shop-t-schirts_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/free-roblox-wallpapers_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/how-to-get-free-robux-ad_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/how-do-you-hack-accounts-on-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_off00002e80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E80 21576 bytes
SHA-256: 4d92120aefbaa8d7120a45b2c5641c348a8d0a66c20390bb8fe5fc5316b6bbf6
font_01_sfnt_off00005ddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDD 19884 bytes
SHA-256: cb21952d07441b0d56b1510038eca4eb36f4a794393016b27b68a45f9d1c8a46

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