Malicious PDF — malware analysis report

Static analysis result for SHA-256 de78165b7bb6a506…

MALICIOUS

PDF

66.7 KB Created: 2020-09-04 07:32:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71c2e227d40357d84fed0af151ea3a48 SHA-1: 2194c7e83d0097a00830fa043907c53f8e6a7838 SHA-256: de78165b7bb6a506389221f6b65ee0bc4506ae7a378434c3c7ef71c8cdd96cf9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. The presence of a link farm heuristic further supports the malicious intent of distributing links.

Heuristics 3

  • 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.
  • 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.link/pify?keyword=transformers+prime+arcee+vs+starscream+episode
    • https://cdn.shopify.com/s/files/1/0450/4079/5806/files/the_thrill_is_gone_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0446/6225/9865/files/xesafalovagepakukidudo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3587/5749/files/employment_application_letter_sample.pdf
    • https://cdn.shopify.com/s/files/1/0428/1345/6550/files/84476901624.pdf
    • https://cdn.shopify.com/s/files/1/0436/8757/5705/files/96360052225.pdf
    • https://cdn.shopify.com/s/files/1/0436/2646/3385/files/siwezagefuwu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/minecraft_tnt_modu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2856/8471/files/daily_school_attendance_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2345/files/math_games_book.pdf
    • https://static.usrfiles.com/ugd/1fa6dd_fddca7c48f3e42e8aaa70ce187dd9bf1.pdf
    • https://static.usrfiles.com/ugd/4c3ae3_86110b3230c54516858b0a7375eb5fb3.pdf
    • https://static.usrfiles.com/ugd/485053_fcdf2ecd8fd84c3892eaee6eafd13ce5.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc65.bin
b3d626e91b988bc94d98adfbf361f61b019274bcfda545eb1b09648d7facd355		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC65 5064 bytes
font_01_sfnt_off0000cd81.bin
a9c091439b8b9951392a686e3ed62e54a6da07a6dc9d38f0d5683671dd39ea49		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD81 9908 bytes
font_02_sfnt_off0000ef6d.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6D 4324 bytes

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