Malicious PDF — malware analysis report

Static analysis result for SHA-256 d876fe1aab68ba7b…

MALICIOUS

PDF

38.1 KB Created: 2020-08-21 09:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff57af6c853e569a1c0ef40ad726006a SHA-1: 5d27f39331f7377adf9543815e390d2e956cace6 SHA-256: d876fe1aab68ba7b39f610cfd3d8da6a625dbb570aba154e41bc688f2e9060c4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=abaxis+piccolo+operator%2527+s+manual'. This indicates the document is designed to lure users to a malicious site. The document also exhibits characteristics of a PDF SEO link farm, with numerous embedded links to PDF files hosted on Shopify, likely to obscure the malicious redirector. No scripts were extracted from this sample.

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.com/pify?keyword=abaxis+piccolo+operator%2527+s+manual
    • http://files.shauntaylorart.com/uploads/1/3/1/6/131636702/bobisurosoz.pdf
    • http://birup.swolfephotography.com/uploads/1/3/0/7/130775169/77da7528.pdf
    • http://wobit.richardfinneyart.com/uploads/1/3/2/8/132814930/3377870.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/86881777102.pdf
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/98344581131.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/english_grammar_book_class_8.pdf
    • https://cdn.shopify.com/s/files/1/0437/8601/0776/files/stihl_fs_55_parts_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/nfl_week_1_schedule_spreadsheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/1010/4216/files/81530656832.pdf
    • https://cdn.shopify.com/s/files/1/0435/5552/0667/files/76755520674.pdf
    • https://cdn.shopify.com/s/files/1/0437/9030/3393/files/64154612312.pdf
    • https://cdn.shopify.com/s/files/1/0437/1673/9222/files/8074450776.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3895/files/81184613020.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8172/files/basic_of_electrical_engineering_notes.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_off00004c0a.bin
01540ceef7776ec75d2f5a517a28c8de00a54e25c9107cbe349b78d7e0c72d7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C0A 5192 bytes
font_01_sfnt_off00005d92.bin
85b5e53dabcddb5bff9a48ae41233c85abdbf2e07b2b6b1f44ad61535d065c1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D92 9376 bytes
font_02_sfnt_off00007dad.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAD 4324 bytes

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