Malicious PDF — malware analysis report

Static analysis result for SHA-256 2875343d1b0e1056…

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 16:09:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 09f566441607a50bf5519691d5fe98a1 SHA-1: dac0e61bf8cc0baa6592221631db9c8727885a28 SHA-256: 2875343d1b0e1056db2707882d4ed77c00811e587a8293fad35af1f60ab08eab
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering free game hacks and currency, such as 'how-to-get-free-robux-easy-no-download-game-hack'. One link directly uses an IP address, indicating a potential attempt to bypass domain-based blocking. The document's content and embedded links strongly suggest a social engineering lure to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.tw/app/431946152/how-to-get-free-robux-easy-no-download-game-hack In PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-com-no-human-verification_GM431946152.pdfPDF link annotation
    • http://111.68.26.74/widyapustaka/repository/free-card-codes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-hacks-vermillion_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/horrnoclip-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-into-roblox-that-work_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-can-i-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-spawn-in-models-hack_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-free-exploits-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-roblox-with-v3rmillion_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/hack-roblox-apk-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-hack-on-laptop-july-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-mobile-24-info-robux_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-hack-client-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-build-a-boat-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/cch-hack-skin-roblox_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_off000030e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E3 22780 bytes
SHA-256: 3ef9ce5bae64bc670e80afc3ebf9f5c508af099282c3f7d28e56231ae343a0a7
font_01_sfnt_off0000640c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640C 19580 bytes
SHA-256: cec9a933bfe218ed72e75e78f410bfe5e0ee423effe7607af1f96a02e11767e9

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