Malicious PDF — malware analysis report

Static analysis result for SHA-256 57e8bc4fc5f7eb49…

MALICIOUS

PDF

34.1 KB Created: 2021-06-20 04:56:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 091e83840fe42798d8b0718601972722 SHA-1: 6ebb3cec57b08a888e72e480ce80e342b5aba660 SHA-256: 57e8bc4fc5f7eb490c8aede41a21d1d65c9b84519533d62dc67087c4b3c084f6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures for popular games. The document body confirms this by displaying text related to game hacks and including the primary malicious URL. The presence of these links and the lure strongly suggests an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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/cheat-engine-roblox-2021-robux-game-hack In PDF document text
    • http://svadba-moda.kg/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-elemental-battlegrounds-free-diamonds_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/hacks-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-tiktok-fans-app_GM835599320.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-robux-gen-no-verification_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-free-items-obby_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-do-you-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-robuxcom-scams_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://svadba-moda.kg/images/follow-bor-roblox-hack_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-roblox-gift-card-codes-2021-live_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-cheats_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-royale-high-school-cheats_GM431946152.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_off00002eb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB7 21836 bytes
SHA-256: 145e061c4804a81673e115cb998d0c5b098fdf7563eac30e7dac24fa1bc11ffc
font_01_sfnt_off00005edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDF 19420 bytes
SHA-256: c690c6822801120cf9dae472b61c53170035d6afbcf8cf0820b8c88ff5917671

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