Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3df2f1bdbe1a17d…

MALICIOUS

PDF

58.7 KB Created: 2021-06-03 07:59:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d8834678cb0d54022327bdc9662490b3 SHA-1: ca52e542c2d3345f2ca4d53da98625b5facd118a SHA-256: d3df2f1bdbe1a17d5425c657286dd5b6892c08f512b9e0d399cba1688f65d219
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirectors, including one identified as malicious infrastructure. The document body and heuristics suggest a lure for game hacks and free codes, aiming to trick users into visiting these malicious sites. Although no scripts were explicitly extracted, the presence of embedded URLs and the ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9611

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.online/app/431946152/free-star-codes-roblox-game-hack In PDF document text
    • http://ghi.dk/billeder/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://ghi.dk/billeder/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/tiktok-free-view-like-video_GM835599320.pdfIn PDF document text
    • http://ghi.dk/billeder/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/roblox-demon_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000502c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x502C 42584 bytes
SHA-256: 9a4fda0415263b7184a376b9f6735e3db2fe2985f916cba7aed145215596ba6d
font_01_sfnt_off0000ab98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB98 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000b57d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB57D 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000c28f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC28F 18456 bytes
SHA-256: e0fd33c50d9e2ad93d9aab52f856c44adae9b6ad9d7cb110af9757aef404b6ba

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