Malicious PDF — malware analysis report

Static analysis result for SHA-256 668816eae889e569…

MALICIOUS

PDF

34.5 KB Created: 2021-07-01 02:15:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 78fcfdf1d36136ea87335bcfc8d72400 SHA-1: 78ec5acd7b552b55bb4829845a10d8de907848fd SHA-256: 668816eae889e5692da8549cb302a81be5e252c2cff4fba5d1b0626357c5be10
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generator' or 'game hack' lures. The primary URL http://netcdn.co/app/431946152/hoodie-t-shirt-roblox-free-game-hack is identified as a malicious redirector. The document body and embedded URLs suggest a social engineering attempt to trick users into visiting these sites, likely leading to further malware downloads or scams.

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/hoodie-t-shirt-roblox-free-game-hack In PDF document text
    • https://ezgolfer.com.tw/image/data/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/robux-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/robux-hack-no-human-verification-pc_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/como-denunciar-a-un-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-roblox-executor-2021_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-free-download_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-free-robux-in-roblox-any-device_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-hack-fame-simulator_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/minecraft-hacks-wurst_GM479516143.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_002_off00002d63.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D63 23196 bytes
SHA-256: bf21b8191ed1d1e444355ec05bdc46e9a983426b385f3c84ada53ddbf2c2451e
font_01_sfnt_off00006171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6171 19216 bytes
SHA-256: 5ba23f2557c95d96dbb1fb9fabb51fd754641042ce28f93b41339ca0bb3843a3

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