Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ba412e54382c75…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 13:30:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 78793cde7479ee443923dc48e86bba3a SHA-1: 71e7b8210b1096e4b7519e4efa869305675cef4f SHA-256: 54ba412e54382c75f20f5b69034b850c0f3d11a34eb20bba0f659ee19b8024ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to free game currency ('Robux') and game hacks, directing users to a known malicious redirector. The document body and embedded links strongly suggest a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and malicious links indicate a high likelihood of exploitation for client execution, potentially via embedded JavaScript or other PDF vulnerabilities.

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/431946152/how-do-i-get-free-robux-game-hack In PDF document text
    • http://www.perpusffup.or.id/repository/walking-through-hack-roblox-v8_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/earn-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-get-free-robux-safely_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/descargar-roblox-hack-robux-infinitos_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/hacking-denisdaily-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-generator-2021-2021000_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-get-free-robux-by-joining-groups_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/robux-cheat-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/como-hackear-roblox-para-tener-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-no-human-veriy_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_off00003186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3186 22356 bytes
SHA-256: ef4cb95e7533b8551dc92a8bdca6fde888e40b25860a1ba88671ac1849a38840
font_01_sfnt_off00006352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6352 19152 bytes
SHA-256: dbadd7ca2f39853e1d628412f433763acd544662f92d7d1ac8e48e35ccd177e9

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