Malicious PDF — malware analysis report

Static analysis result for SHA-256 193053e253f25c56…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 18:40:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 07f689bf6579fd4a15c1f227f0949acd SHA-1: df9be88b6e893d0874dbe79dd4b313104872d468 SHA-256: 193053e253f25c565485a4cb1cb2c8026798bf16e561924afe4b06f111c4b084
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games. The document body and heuristics indicate a lure to trick users into visiting these malicious URLs, likely to download further malware or engage in phishing. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/roblox-free-book-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-roblox-without-verification_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-code-for-call-of-duty-ww2-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-leaderboard-script-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-ninja-legends-hacks_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/pokemon-go-free-rare-candy_GM1094591345.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-cool-shirts-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/software-for-cheat-engin-66-to-not-make-roblox-carsh_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-free-shirts-id_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/games-like-coin-master-for-free_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_off00002f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4B 22560 bytes
SHA-256: 1c3f7298649cc01ae9eb085913e8f8ddf4e06ddce483c7233c4ecda49d792755
font_01_sfnt_off00006196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6196 18820 bytes
SHA-256: 46f0d047912ca171ae7d64cfc2585926237708576228ef433747ff14ac34dce4

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