Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e5c2da80826cd2c…

MALICIOUS

PDF

41.5 KB Created: 2021-05-10 15:06:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0a53dd5ca1c8a63f1b3d888d572e5ea0 SHA-1: 28f9fdd999f7278dda20051a124ce44743ec60ef SHA-256: 6e5c2da80826cd2c4eb2163c45ceaad0c16f8affc911385de894a1026f037fbb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically disguised as 'game hack' generators. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs likely serve as a lure to download further malicious content or lead to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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/406889139/coin-master-app-free-download-game-hack In PDF document text
    • https://www.wannon.tw/upload/files/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/minecraft-tools_GM479516143.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-coin-master-spin-generator_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_003_off0000450c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x450C 25704 bytes
SHA-256: 0bac6b0e97d6191867e5e8e154d9336e2f6ca6d8f62b5f81aa3f174647398923
font_01_sfnt_off00007fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB1 18464 bytes
SHA-256: 40f30d03f9df9e16cedf50fa7ce351738090605bdee0a2874ac532244730da1c

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