Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b9cfc866498d1d0…

MALICIOUS

PDF

48.6 KB Created: 2021-06-03 09:39:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b2a97b478da5d618be03bbb200cfe1e9 SHA-1: 8168eaffd95473fdb0016b09b04310924852f091 SHA-256: 7b9cfc866498d1d00721f64666a01ae91c3f143b2f958265a254675948614b64
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external PDF files, presented as game hacks, indicating a link farm designed to lure users to malicious content. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' suggests the document may also attempt to trick users into executing commands, further supporting a malicious intent. No scripts were extracted, but the overall structure and URL targets point towards a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://netcdn.online/app/431946152/roblox-sexually-game-hack PDF link annotation
    • http://empresa-venta.hr/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://empresa-venta.hr/files/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://empresa-venta.hr/files/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • http://empresa-venta.hr/files/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://empresa-venta.hr/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/coin-master-today_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://empresa-venta.hr/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://empresa-venta.hr/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://empresa-venta.hr/files/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/roblox-lovenet_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e24.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E24 28612 bytes
SHA-256: 0f4dc102f4c2271a6bc05bf84918f526752159502ae06def5dd0c27f7007a4b5
font_01_sfnt_off00008dca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCA 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ADC 18332 bytes
SHA-256: 167f004aaf573bac0fbc7d6959cd1dcde4a3b0ba0ae5768dad9a7ddf61376911

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