Malicious PDF — malware analysis report

Static analysis result for SHA-256 238b04815ac00abf…

MALICIOUS

PDF

35.7 KB Created: 2021-06-20 06:33:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2a2c81235d86e59c77d73cfcc91a516e SHA-1: 521d92ecd65a77569d0ab5f9b2762abf8babd9ef SHA-256: 238b04815ac00abfad6ae10adedfe17a642240906357f1f8b9fa18ce02cd057a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links to known malicious redirector infrastructure, specifically designed to lure users with promises of free in-game currency or hacks. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely intended to lead users to download further malware or compromise their accounts. No scripts were extracted, but the PDF structure and embedded URLs are sufficient to identify the malicious intent.

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-get-free-robux-no-human-verification-2021-mobile-game-hack In PDF document text
    • http://www.peterbarsony.com/userfiles/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-stuff-in-the-catalog-roblox_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/pubg-uc-download_GM1330123889.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-free-spin-link-app_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_off000030c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C5 22552 bytes
SHA-256: 553c68f91f1dc165cc60699664f419783dd7f0d35c7fa8c878d632c1b2065b02
font_01_sfnt_off00006348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6348 20172 bytes
SHA-256: 509570ddea19f2f82cbdd8b8bfd09f2d4858821b37e756c1c9324f2b6cd7cfc2

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