Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd06ff66c3fd2614…

MALICIOUS

PDF

34.6 KB Created: 2021-07-02 00:57:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 421c7bfb1a3f6872f7f101adcc5ff44d SHA-1: be20f80cc5c58953f33fb682747f6505c459a745 SHA-256: fd06ff66c3fd2614968dea2373c9cd07177055c2c0a8713f6cda55a6868dee46
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically a site offering 'free Robux' or game hacks. This lure is designed to trick users into clicking the link, which likely leads to a further malicious download or exploit. The ML classifier also strongly indicated maliciousness.

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/codes-to-get-free-robux-2021-game-hack In PDF document text
    • https://opac.itp.ac.id/repository/roblox-closes-as-soon-as-i-open-cheat-engine_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-hat-free-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/rbx-earn_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/robux-online_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/pokemon-go-free-latest-version_GM1094591345.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coinmaster_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/triga-cheat-engine-for-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/download-cerberus-roblox-hack_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/groups-for-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-robux-on-hp-laptop_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hacks-para-db-rage-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-roblox-players-on-ipad_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-roblox-card-codes_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_off0000307e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307E 21944 bytes
SHA-256: 15d2153c346c5bd17c2a95c3b925559071c80d1f9ba97946a69ca5be50593800
font_01_sfnt_off000060f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F2 19396 bytes
SHA-256: a03f8f512b6c22820905e36471a13bcb35859445edefb68524c9a1979c0b3be4

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