Malicious PDF — malware analysis report

Static analysis result for SHA-256 22a739d462bad8b4…

MALICIOUS

PDF

40.8 KB Created: 2020-08-22 05:28:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73dcfe7aa6a9fcf1b688da5eee8e649b SHA-1: 1a400e6fb8a84beb58ca958a6bdc644e72b85946 SHA-256: 22a739d462bad8b43ca6b9271dd705de366d3a708c00f90b4e1dbd9e7b1f19be
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO link farms and redirector schemes. One prominent link, 'https://ttraff.ru/pify?keyword=more+agile+testing+lisa+crispin+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of many links, including those pointing to Shopify domains, suggests an attempt to distribute malicious content through a seemingly legitimate platform.

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.ru/pify?keyword=more+agile+testing+lisa+crispin+pdf
    • http://files.vanitiesspa.com/uploads/1/3/1/6/131637150/nasinasuvejoresukado.pdf
    • http://files.eftcatherine.com/uploads/1/3/2/6/132680784/dizomigubafotevos.pdf
    • http://files.geostructuralengineering.com/uploads/1/3/0/9/130969905/pamejamonaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/1808/2711/files/gasovixudoxopuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/82404802681.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/6827277623.pdf
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/pokegasudumozererapa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9736/6436/files/siluni.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8333/files/zodavokam.pdf
    • https://cdn.shopify.com/s/files/1/0428/7633/8335/files/sustainable_design_principles_in_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/xarisitivojenubabew.pdf
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/33619176452.pdf
    • https://cdn.shopify.com/s/files/1/0446/9984/4762/files/bsnl_broadband_bill.pdf
    • https://cdn.shopify.com/s/files/1/0448/1508/9825/files/biochemistry_for_first_year_medical_students.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_off000060ca.bin
99ff951541a5e6957b181418f4af3f1bb9ca07bfae60486dcec308cc893ccc7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CA 5328 bytes
font_01_sfnt_off00007301.bin
4e78cef9ef25cf564857c611f1f5b198ce07361740da762f4acfa2df66b9f9b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7301 10408 bytes

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