Malicious PDF — malware analysis report

Static analysis result for SHA-256 22044d69335a52c1…

MALICIOUS

PDF

34.5 KB Created: 2021-06-28 23:51:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 34d436f47314bdad4ac314899ab6dc18 SHA-1: be5f50d7f1cb15693da9b2af4fac7090120c2ec6 SHA-256: 22044d69335a52c1a62d9f776e8f5cb1ddd9ec38e216f099ab875ce394684c04
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, specifically advertising 'game hacks' and 'free currency' generators. These redirectors, such as http://netcdn.co/app/431946152/roblox-tix-hack-generator-game-hack, lead to further malicious PDF files hosted on nature-air.com.tw. The document's content and embedded links strongly suggest a phishing or scam campaign designed to lure users into downloading further malware or engaging in fraudulent activities.

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/roblox-tix-hack-generator-game-hack In PDF document text
    • https://nature-air.com.tw/upload/files/free-robux-hack-android_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/how-hack-in-prison-life-20-roblox_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/roblox-character-free_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/hacks-for-dungeon-quest-roblox_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/clubdark-roblox-hack_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/comment-faire-pour-hacker-sur-prison-life-roblox_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/daily-free-spins-for-coin-master_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
font_00_sfnt_off00003143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3143 21988 bytes
SHA-256: 07286bcae57acc2ed0cea81f45ad24d735cc2645a8d643bfbf477ca1b6321958
font_01_sfnt_off00006227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6227 18880 bytes
SHA-256: 23a2dd489f3a16f29758d5e682f72330b25fd35dd4a2bb146f65d134f5cb07a9

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