Malicious PDF — malware analysis report

Static analysis result for SHA-256 a067aedacdc40d3f…

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 22:58:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d52bca05aad79781d507b5106617e84c SHA-1: 6ae4f79e86fbe783292b740c22ac569e52592b56 SHA-256: a067aedacdc40d3f68e8837e191257094a37fe16af2d7eba0607c1ec6da7d87c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and currency to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/how-to-look-cool-on-roblox-free-game-hack, is identified as a malicious redirector. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

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.co/app/431946152/how-to-look-cool-on-roblox-free-game-hack In PDF document text
    • http://bepquannhu.vn/upload/editor/files/pokemon-go-free-legendary-pokemon_GM1094591345.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/how-to-get-free-robux-without-downloading-apps-on-ipad_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/roblox-hack-week-2021_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/roblox-mining-simlator-cheats_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-100-robux_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-robux-is-a-scam_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/inject-hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/how-to-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/real-free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/robux-hack-created-by-robuxian_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/hacking-someones-robux_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_off00003178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3178 22200 bytes
SHA-256: f5dc7d3bb41f12a6842c24c46b88a06f35eceda77aa9e7ecfa3d7a3b1121af5b
font_01_sfnt_off000062ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CE 18984 bytes
SHA-256: 6e0c72ce5859b06520f49d40566a668f2d219a2028c44bd4c3a435c2d8ef5019

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