Malicious PDF — malware analysis report

Static analysis result for SHA-256 541e598edd6f13c5…

MALICIOUS

PDF

51.2 KB Created: 2020-08-29 18:13:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77b18158c6664e82721681f90d2fc58b SHA-1: 909e020204715b85e1fbdf80b6076e3c5a8e5f69 SHA-256: 541e598edd6f13c5f3523f526061333064a236e929c9b407cb6f82748c60776c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One of the primary links, 'https://ttraff.ru/wix?keyword=2013+bmw+135is', is flagged as a known malicious redirector. This suggests the document's purpose is to lure users to malicious sites.

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/wix?keyword=2013+bmw+135is
    • https://static.usrfiles.com/ugd/4dd980_fb8f01f26ef94ca7a08540c2eef64689.pdf
    • https://static.usrfiles.com/ugd/8b97dd_4bc0077441204593a3fd3dd7a0418fc7.pdf
    • https://static.usrfiles.com/ugd/b8c837_52420dc35d35428d9fabd42195870765.pdf
    • https://static.usrfiles.com/ugd/b8c837_2cd2368c0c364fc0b2f561985575212e.pdf
    • https://static.usrfiles.com/ugd/b8c837_36791c1b61324c0e93b04f5527d5f766.pdf
    • https://static.usrfiles.com/ugd/b8c837_325f6590ea75485f9ad77d51ffb9b8af.pdf
    • https://cdn.shopify.com/s/files/1/0451/0292/3939/files/building_design_and_construction_handbook_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/system_architecture_github.pdf
    • https://cdn.shopify.com/s/files/1/0431/0790/9794/files/osaka_train_map.pdf
    • https://cdn.shopify.com/s/files/1/0438/1373/2512/files/disney_customer_service_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0448/0778/2557/files/bioconversion_enzymatique.pdf
    • https://cdn.shopify.com/s/files/1/0439/0027/2792/files/abbyy_transformer_3._0_pro_crack.pdf
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/introduction_to_psychology_file.pdf
    • https://cdn.shopify.com/s/files/1/0437/8840/2839/files/wimbledon_bracket_2018.pdf
    • https://cdn.shopify.com/s/files/1/0431/5624/2581/files/factors_and_multiples_worksheet_grade_5.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_off00007f05.bin
550671eb637f57d56ee0f5b2482e9616bdf569e995481d1bf7f2689c75e5ed52
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F05 4620 bytes
font_01_sfnt_off00008eb5.bin
46d5b0538b957b802a4bacf60ca2d06071881e7bbb85196c69efc1dc77179b80
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB5 10212 bytes
font_02_sfnt_off0000b1bd.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB1BD 4324 bytes