Malicious PDF — malware analysis report

Static analysis result for SHA-256 b71507e3d0599305…

MALICIOUS

PDF

73.9 KB Created: 2020-08-29 14:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b8d569e1ba9ff9bc0f547d6a1b81444 SHA-1: 0920b56325215824d5fbf967852ba220050b8986 SHA-256: b71507e3d05993057aa87639b1442fb7c64853d42cd05061f9733837df223333
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of multiple embedded PDF links also points to a link farm or redirection strategy.

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.cc/wix?keyword=filot%25C3%25A9ia+ou+introdu%25C3%25A7%25C3%25A3o+%25C3%25A0+vida+devota
    • https://static.usrfiles.com/ugd/b8c837_edeca505c90946eda64fe362c8d237a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ec6fa03b22d487ca22ac3d8f9f580e4.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e513476bfcc46d092b5bce988f05cef.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2fbf2502bc746fe86a3c4dec6c5054f.pdf
    • https://static.usrfiles.com/ugd/b8c837_78649abb3d80431f8a9bf0224a081a4f.pdf
    • https://static.usrfiles.com/ugd/b8c837_5360837f048243f5b64ed894b6c65273.pdf
    • https://static.usrfiles.com/ugd/b8c837_31f2c65a564e47d49517cc3942498ce8.pdf
    • https://static.usrfiles.com/ugd/b8c837_22cf1212154446df87a2a48f71669641.pdf
    • https://static.usrfiles.com/ugd/b8c837_93101a807d464f42903c65c8a4de4a78.pdf
    • https://static.usrfiles.com/ugd/b8c837_535436f396cc4adab88aa1739415d2eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_beba4432736d44e8bebca1d18845bce3.pdf
    • https://static.usrfiles.com/ugd/09273f_a326515711e34b998d76a1745bc71c03.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/riwafi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/kudalawafixapapizi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdf
    • https://cdn.shopify.com/s/files/1/0440/8056/2326/files/resume_template_free_microsoft_word.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_off0000c702.bin
5d32865175c2a4a891c8366e3b282dd31a84b72c52285a42a7058b6a84dcb1d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC702 5532 bytes
font_01_sfnt_off0000d868.bin
4c2b99c96c2352e315f4b52db74455f19ab76f3fe1764d477515448d40be98bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD868 13040 bytes
font_02_sfnt_off0000fee8.bin
6adcfa66884a987dc2db143604bf98db2ad90adb6993afbcf077c9506ddd5d97		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE8 17288 bytes

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