Malicious PDF — malware analysis report

Static analysis result for SHA-256 97fbe02bbe936c32…

MALICIOUS

PDF

44.9 KB Created: 2020-08-11 18:56:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c308357f5e04915f5c5669f90a75dbd SHA-1: 4298ef2cc0198986b14d5cf0133001e8c3f21651 SHA-256: 97fbe02bbe936c322f6c746d1e2b5244eec9b35b537cd3ca53e68299234dc567
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Qualified dividends and capital gains worksheet 2017' and the malicious URL, suggesting a lure to trick users into clicking the malicious link. The primary attack pattern involves redirecting users to malicious infrastructure under the guise of providing a tax document.

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/wb?keyword=qualified%20dividends%20and%20capital%20gains%20worksheet%202017
    • http://dexisuw.visualsbyjacqui.com/uploads/1/3/1/3/131383775/632890.pdf
    • http://files.utahskillsusa.org/uploads/1/3/1/3/131379830/471130a4f04.pdf
    • http://files.ianglassfitness.com/uploads/1/3/1/8/131857305/wuxexax.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/98074715217.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/30128291089.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/wedag.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/release_me_j_kenner_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8073/files/rirufafaxogumo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52657742202.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/10624018631.pdf
    • https://cdn.shopify.com/s/files/1/0438/6953/6411/files/psychology_books_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/kuxevejagar.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/adobe_photoshop_cc_2020_full_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/50688082210.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8073/files/pdf_split_sejda.pdf
    • https://cdn.shopify.com/s/files/1/0453/4956/8667/files/stay_strong_demi_lovato_free_download.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_off00006c42.bin
b6db8b0db048bd30a9884feaf65aee33f07348e38961abc09afe13f3dd908e00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C42 6100 bytes
font_01_sfnt_off00008127.bin
e495a9129cf66bfa391f52e48e0ea6c223cbeccfbf03ce7978d73355e4c9a2aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8127 11028 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.