Malicious PDF — malware analysis report

Static analysis result for SHA-256 d269b16d5073bd2d…

MALICIOUS

PDF

45.8 KB Created: 2021-05-15 13:02:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5ae479f7d3cafca8a801c019dbed3f24 SHA-1: 6c654184dcd3e05e8f2ddfc76e35d73778221ad6 SHA-256: d269b16d5073bd2d7e3423a7db2affa8613c0e1a7fda477642378aa856036460
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting 'free Robux' or 'game hacks'. The document body and embedded links strongly suggest a social engineering lure designed to trick users into visiting these malicious sites. While no scripts were directly extracted, the PDF's structure and heuristic firings indicate it functions as a malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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.xyz/app/431946152/free-robux-no-verification-or-survey-game-hack In PDF document text
    • http://ltdirect.co.uk/images/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://ltdirect.co.uk/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://ltdirect.co.uk/images/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ltdirect.co.uk/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://ltdirect.co.uk/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://ltdirect.co.uk/images/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://ltdirect.co.uk/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://ltdirect.co.uk/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://ltdirect.co.uk/images/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://ltdirect.co.uk/images/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://ltdirect.co.uk/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://ltdirect.co.uk/images/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://ltdirect.co.uk/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://ltdirect.co.uk/images/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://ltdirect.co.uk/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://ltdirect.co.uk/images/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://ltdirect.co.uk/images/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://ltdirect.co.uk/images/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ltdirect.co.uk/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://ltdirect.co.uk/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A0 25296 bytes
SHA-256: cd7bb933f0a9d2af0669b916150a39536b31d02de5fc892a1cc2b9a7ad1b92c7
font_01_sfnt_off00008472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8472 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E5D 18892 bytes
SHA-256: 85e8471d4bb7809b16494b43ecc998cec7f87bafeaec38a3001510264e72f0e6

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