Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b6b95fdfa2a7b2…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 12:59:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 5da3cd82921e51bf221cbfb3090c8fa0 SHA-1: 81100a3e2dcb3fb6e076393ff15c2d103da4d8e2 SHA-256: 03b6b95fdfa2a7b25f8226c53cc1a98c0c73f568fa98a8f6a18d3c6b7355e18a
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including a critical one to a known malicious redirector at http://netcdn.tw/app/479516143/minecraft-ps3-free-download-game-hack. The document body and heuristics indicate a lure for game hacks and free downloads, aiming to trick users into visiting these malicious sites. The presence of many SEO-optimized PDF links further suggests a link farm designed to attract traffic for potentially malicious purposes.

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.tw/app/479516143/minecraft-ps3-free-download-game-hack In PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/roblox-robux-hack-download-no-survey_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/speed-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-get-free-robux-legit-pc_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/roblox-apk-mod-unlimited-robux-free-download_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-robux-no-password-or-verification_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-hack-someone-on-roblox-on-phone_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/774-roblox-hack-discord_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-do-you-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/slurp-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-robux-no-catch_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/ben-10-roblox-free-games_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/hacks-para-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/easy-way-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/innovation-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/dragon-ball-fury-roblox-hack_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_off00002f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6F 22648 bytes
SHA-256: 635326739d4d938c66d5376cc8d8f772831fb6329b7addd0d5486f41db98bd10
font_01_sfnt_off000061d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D5 18904 bytes
SHA-256: 1ff22f039942d0da4b5f5b0c58eeeabae74443a41c427605d95e99f5cf2dd39a

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