Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac6b058d527d4510…

MALICIOUS

PDF

41.7 KB Created: 2021-05-12 14:44:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dbc7afbbf6fa4fbe368186988e0874c1 SHA-1: 25a189ee259d1806993d0a79cbecbfa7d1ae9a16 SHA-256: ac6b058d527d4510d7240ed4d3d80b7319ea7646d2d16419b3c1ecff24e85b4b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, which is designed to lure users to potentially harmful websites. The document body text and embedded URLs suggest a scam related to in-game currency or hacks for popular games like Coin Master and Roblox. The presence of a download button lure further supports the malicious intent of directing users to external resources.

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/406889139/coin-master-daily-gift-free-spins-and-coins-link-today-game-hack In PDF document text
    • https://www.ruchya.com.tw/upload/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/coin-master-hack-no-survey-2021_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/rbxdemon_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-bobux_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/coin-master-com_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/roblox-font-free_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/coin-master-spins-hack-2021_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_off00004837.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4837 24984 bytes
SHA-256: 9c4ef47f6e2ef438ce1f81deb98c6f559a2988a206483705db3d321eea43ad8b
font_01_sfnt_off00007f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F53 18652 bytes
SHA-256: acc88e8ff3d4d09cb66d664b97f6065b804d1ea0ab1b79688b3054775362f50f

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