Malicious PDF — malware analysis report

Static analysis result for SHA-256 61b0461e8c6fd784…

MALICIOUS

PDF

42.7 KB Created: 2021-05-13 11:52:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9d8cc67ce883642cd996910f986e28f1 SHA-1: ca8f7b906f097cc5fccfcf05ed15e692f2fbdfce SHA-256: 61b0461e8c6fd784d8d841f5b562508b4b6f3e8bbc1b8dc067fa67917afcbd94
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "game hacks" and "free currency generators." The document body and embedded links suggest a social engineering lure to trick users into visiting these sites. The presence of multiple redirector links indicates a high likelihood of further malicious activity, such as downloading additional payloads or leading to phishing pages.

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/how-do-you-hack-for-2021000-coins-on-flip-master-game-hack In PDF document text
    • http://deyuan-pc.com.tw/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://deyuan-pc.com.tw/images/how-to-get-free-robux-easy-2021_GM431946152.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_off00004922.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4922 25056 bytes
SHA-256: 029cf40ebe51a352f63baf8618f0530f608f6dba61896cc2c8cc7681bbc30ff1
font_01_sfnt_off000081ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81EE 19168 bytes
SHA-256: 6f51f4e7a1953769f71fa2d8675428246437bddbad768407a7460f1377c6478d

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