Malicious PDF — malware analysis report

Static analysis result for SHA-256 842ca7381989ad52…

MALICIOUS

PDF

35.2 KB Created: 2021-06-19 16:53:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6c5d36a512d6d43b7e0ab70a704a9a13 SHA-1: 15e9dccae486a411553c972fb365e59cc6ca233d SHA-256: 842ca7381989ad52f84250f00a3aab3829cb66c2c998077361352c47409b38b9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and generators, specifically mentioning 'Meep City Roblox' and 'free coins'. It embeds multiple URLs, including one pointing to 'netcdn.co', which is flagged as a redirector for a game hack. The ML classifier also strongly indicated maliciousness. The document's purpose is to trick users into visiting these links, likely to download further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-get-free-coins-on-meep-city-roblox-2021-game-hack PDF link annotation
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-roblox-costumes_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/robux-hack-pastebin-fast_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/hack-roblox-pc-download-scripts-no-noclip_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-make-a-free-roblox-shirt_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-400-spin-link_GM406889139.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_off0000311b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311B 21932 bytes
SHA-256: b41329c02ad4df59f3b77852a7b84a28e15d9db7b3b80ed2f4547e26e0fc83f5
font_01_sfnt_off0000618f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618F 19992 bytes
SHA-256: ded8596925c4ac95b853eea9f1632aa8ef2a45b632dfd91d638b6bc071e3a89b

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