Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa720cb06e447908…

MALICIOUS

PDF

48.7 KB Created: 2020-09-17 12:30:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 895395a2c11f4a62e37eb67618015895 SHA-1: 734934d2db1b87377f67fe676a0737ea355e4974 SHA-256: fa720cb06e44790814eea3c8caa180bfebc92879bd4f33a7d439fee071e81cd5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to other PDF files hosted on Shopify and other file-sharing services. One of the primary links directs to a known malicious redirector. This suggests a tactic to obscure the final malicious destination and potentially engage in SEO poisoning or link farming to distribute malware or phishing content. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact nature of the lure beyond the presence of the 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/wix?keyword=alvin+and+the+chipmunks+fanfiction+alvin+depressed
    • https://cdn.shopify.com/s/files/1/0432/9612/9192/files/world_geography_trivia_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/data_analysis_with_open_source_tools_janert.pdf
    • https://cdn.shopify.com/s/files/1/0427/9602/3975/files/29676459201.pdf
    • https://0485cf9e-dee2-4cfe-826b-fef551355acc.filesusr.com/ugd/98857b_69f5c929158e498b9de1b8e170f37c71.pdf?index=true
    • https://103dab6c-4bee-4a53-a272-ccbaca81d07d.filesusr.com/ugd/70a38d_35df51c7902e4c32b42ceeeda6ebba97.pdf?index=true
    • https://d1dbc6b1-55b6-4b4a-aac7-a2a2ccd7346b.filesusr.com/ugd/694d5d_1f84ade9e7544f5da18f89c53cc664e3.pdf?index=true
    • https://62919c6f-54a9-4600-8942-a00636473590.filesusr.com/ugd/1715bf_a9445c309e9144b196357af09c94ae45.pdf?index=true
    • https://358ee1ea-caaf-41dd-a37c-93e80c626ef5.filesusr.com/ugd/41a0b6_f1b26d6532eb4faf96488be292afaf7e.pdf?index=true
    • https://92904ebb-aa80-44f9-9f31-a265ede44a2c.filesusr.com/ugd/7baf93_556831dfe21e4dbb8a89184d9ff29445.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/79504644326.pdf
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/xemoguvaridirileketum.pdf
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/no_matter_what_i_do_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/5349/0071/files/vikek.pdf
    • https://cdn.shopify.com/s/files/1/0432/4343/8244/files/74587166193.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000804f.bin
fd99350014342017db71a35e8781be193afd3f8b7a07c50aee61f203a141e618
pdf-font-stream PDF embedded font (sfnt) at offset 0x804F 5508 bytes
font_01_sfnt_off000092eb.bin
c68f3656375541374e3407c03bb244c41bafb8f9ba78cdc0144ea912e5332629
pdf-font-stream PDF embedded font (sfnt) at offset 0x92EB 10060 bytes