Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bf78a7dccdb9ca4…

MALICIOUS

PDF

34.3 KB Created: 2021-06-25 16:51:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 74ce3fec2301796c207436cc5d4f82a8 SHA-1: 1abc0750f873374085f6cfe95c9be86d6af37e13 SHA-256: 4bf78a7dccdb9ca468de7ad49a224607f80a7808d66ac7f3a04a1f6851b903fe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links to known malicious redirectors and lures users with 'game hack' content. The primary link, http://netcdn.co/app/431946152/lifting-simulator-roblox-hack-script-pastebin-game-hack, is identified as a malicious redirector. The document's content and embedded URLs suggest a social engineering tactic to trick users into downloading potentially malicious files.

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/lifting-simulator-roblox-hack-script-pastebin-game-hack In PDF document text
    • https://anshingtek.com.tw/image/data/files/ho9w-to-hack-roblox-with-any-player_GM431946152.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/is-tiktok-free-on-apple-store_GM835599320.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/rbx-free_GM431946152.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/minecraft_GM479516143.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/how-to-hack-roblox-flee-the-facility_GM431946152.pdfIn PDF document text
    • https://anshingtek.com.tw/image/data/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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_off00002f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9F 21700 bytes
SHA-256: 243f32b0ec947b34bbb36ed73c968d01732537dbda1713e69b55a69811a3a262
font_01_sfnt_off00005f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5D 19612 bytes
SHA-256: 2f951ab656f968c3f5fdada6a33f0e7a502317812d304283d178e2a13c1c0199

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