Malicious PDF — malware analysis report

Static analysis result for SHA-256 42ffa9ac768176b9…

MALICIOUS

PDF

44.5 KB Created: 2021-06-10 19:03:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 31d2b87ab7c64a6c48d6856a56a4961f SHA-1: 74fb15ec6d903fd9dc7eca7ac380b6c09e37a7d2 SHA-256: 42ffa9ac768176b9df0b58dd50a9d89877f27f25430ce4220bd50a25f6500345
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "game hacks" or "free generators" for popular games. The document body and embedded URLs strongly suggest a phishing lure designed to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious redirector chain, likely leading to further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/roblox-free-money-on-build-a-boat-for-treasure-codes-game-hack In PDF document text
    • http://jdlrelocation.com/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/pokemon-go-free-hack_GM1094591345.pdfIn PDF document text
    • http://jdlrelocation.com/images/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://jdlrelocation.com/images/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/give-me-robux_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-free-spain_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-robux-hack-no-email_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/roblox-ftw_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000505f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x505F 24716 bytes
SHA-256: a7fb056f1e7c9b63249a4ec83ff6d0b44710c7447ac8bfb6bcb4c3bcb4651dd7
font_01_sfnt_off000088af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88AF 19092 bytes
SHA-256: 3b79a74faf3a658067246f14c6620a297719a29ede2edcbaa17442e3d06f0409

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