Malicious PDF — malware analysis report

Static analysis result for SHA-256 1817532b533bdf5a…

MALICIOUS

PDF

35.8 KB Created: 2021-06-17 22:30:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c2d32e6afa16ee2a658cfa42a22d7ba9 SHA-1: 94815993840e741ea5331155648f1540eafb9e76 SHA-256: 1817532b533bdf5a657973a0421bb4fa95c021c3749b89452bcb304209fd9e37
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary link, http://netcdn.co/app/431946152/roblox-robux-hack-working-100-with-proof-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirection workflow designed to trick users into downloading further malware or visiting phishing sites.

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-robux-hack-working-100-with-proof-game-hack In PDF document text
    • http://library.patria-artha.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-spam-hack_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-pet-simulator-lua-script-hack_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/pokemon-go-free-0-iv_GM1094591345.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/cheat-command-terminal-railways-roblox-admin-pass_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-cute-outfits-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-roblox-cosmetics_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/poke-coins-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_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_off00003123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3123 22888 bytes
SHA-256: dcd57d58f03ea88d8ab9c9804e4d75afa3e2e929235f04826394004315a48421
font_01_sfnt_off0000648c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648C 19816 bytes
SHA-256: 284c5ba8c70b51be6cf874508212f3c779add366676bcbb3d4284a6893fe682e

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