Malicious PDF — malware analysis report

Static analysis result for SHA-256 02bdcb116f2d8b7a…

MALICIOUS

PDF

40.8 KB Created: 2020-08-16 21:15:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e2986babfb1e44b28a88ead178c0c09 SHA-1: 1ef72fb10085f764879448e0a6a4609bffcdce76 SHA-256: 02bdcb116f2d8b7af0e15e04e887b9f4e9679ac81b87cb4e15507204dcd13195
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains a lure for "Windows 10 pro 32 bit setup" and embeds numerous links, including one pointing to the malicious redirector ttraff.com. The heuristic firings indicate the document is designed to redirect users to malicious infrastructure, likely to download a second-stage payload. The presence of a clipboard command lure suggests an attempt to trick the user into executing commands, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://ttraff.com/pify?keyword=windows+10+pro+32+bit+setup
    • http://files.wordsalivekamloops.com/uploads/1/3/0/7/130776341/rosedivopa_mazusowexeburo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/dutigatezatudeva.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/64790333952.pdf
    • https://cdn.shopify.com/s/files/1/0440/3062/3894/files/masob.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/67880061053.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/general_biology_2_grade_12_module.pdf
    • https://cdn.shopify.com/s/files/1/0437/7395/2158/files/phylum_nematoda_characteristics.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5885/files/html_to_angular_npm.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1266/files/xunajilepaxuzugodu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/mabulusijupupababid.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/alkyne_alkene_alkane.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000611d.bin
a1611f26ce511c88d540db5177b83e4939275c031f980615976981d988bae19c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x611D 5448 bytes
font_01_sfnt_off000073ca.bin
1965b90a7c6e4a3651197968919ea4a3286c5b9f40272485b538ee84dc44cada		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73CA 10236 bytes

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