Malicious PDF — malware analysis report

Static analysis result for SHA-256 666b3b033aeda676…

MALICIOUS

PDF

34.0 KB Created: 2021-06-27 19:07:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 68bd5b2507cb6dbd3e633db7b4fbbc48 SHA-1: 62092e6d5acaf8830ec44231d4cfc9aae33d841d SHA-256: 666b3b033aeda67661e4bc2ba447457249e24b81ad65e533dc5039724e6a63de
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking embedded links. The primary link redirects to known malicious infrastructure, suggesting a phishing or scam campaign. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful sites.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/cheat-strucid-roblox-game-hack In PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/coin-master-free-download_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/script-hack-roblox-legend-of-speed_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/roblox-tower-of-hell-hack_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/how-to-hack-in-roblox-mad-games_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/medkit-free-robux_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/rbx-website_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/rbx-com_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E0B 22128 bytes
SHA-256: 2ccdac1e57782cbd137ea8388a22f0ac588b8d9caffbdeb71bb0bbe955431f32
font_01_sfnt_off00005f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F57 19192 bytes
SHA-256: 0baddc7c285baba03cee4b1e98beaa1ab5bf978e69cb05a661fba08f80c80be3

Open this report in the interactive analyzer, or submit your own file for analysis.