Malicious PDF — malware analysis report

Static analysis result for SHA-256 cba56e3a02599195…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 18:03:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 981c5affdeaf561a47b9576a1c3eca4a SHA-1: 6b14c557397ac877e5fc7022cf3dc4d9316bcc50 SHA-256: cba56e3a02599195971b98b7472180ab05e62e1c1db1581d775d0359eb53ba95
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, specifically a site offering 'Coin Master Free Spins And Chips' which is a common lure. The document body and embedded URLs indicate a social engineering attempt to trick users into visiting a potentially harmful site. The presence of multiple redirector links and the ML classifier's high confidence score support this assessment.

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.tw/app/406889139/coin-master-free-spins-and-chips-game-hack In PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-to-hack-someones-account-on-roblox-vr3million_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/hacker-pants-roblox_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/2021-lvl-ro-ghoul-in-roblox-cheate_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/roblox-free-anamations_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/hallowen-simualtor-hack-roblox_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-to-get-free-marshmallows-in-backpacking-roblox_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/roblox-it-free_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-robux-that-actually-works-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
font_00_sfnt_off00003326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3326 22720 bytes
SHA-256: 35bd35c09e3e213c95b62f7883a8d2508e9fa15780c1c8dc3b7be4e3e2c93c07
font_01_sfnt_off000065ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EE 18516 bytes
SHA-256: 36cad0d0240957eee0646312619cc21c77e0b88ed1bf9b3bf004f144e54c7458

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