Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d22f049d180a3f6…

MALICIOUS

PDF

42.2 KB Created: 2021-05-13 19:05:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5e39f2234d5a4e9564bb791dfd71d657 SHA-1: edeb9528c3983708a3468fb7ac59522f6ac507bf SHA-256: 4d22f049d180a3f6f2d2e555410e65fbd6b6ca330eae109bf569a320b55508e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as free game hacks or generators. The primary lure is 'Minecraft Pe Server Hosting Free', directing users to a suspicious URL. The presence of numerous similar lures on unrelated domains suggests a broad phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-pe-server-hosting-free-game-hack In PDF document text
    • http://ralf-gryga.de/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://ralf-gryga.de/images/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://ralf-gryga.de/images/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://ralf-gryga.de/images/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://ralf-gryga.de/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • http://ralf-gryga.de/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/roblox-adopt-me-hacks-2021_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
stream_003_off00004aa6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA6 24972 bytes
SHA-256: d4516b421309bdd97b894916e826461492e21fa5c2a02205ab059bb50c95fb85
font_01_sfnt_off000082a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A5 18264 bytes
SHA-256: 5ec3f0b561cebc5d47f64e939320a46a649b92723dcace5f5f230f044584545d

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