Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfd970420f862384…

MALICIOUS

PDF

38.6 KB Created: 2020-08-10 15:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 899ff09bfef0ab7d4d9ed17d68c2f3ca SHA-1: 574da99c07abe86385e92fc1142b628067784fc0 SHA-256: bfd970420f862384274e639387692ac00c890800862cf1e3d42e721a06cc59b8
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.ru/pify?keyword=fundamentos+da+administra%25C3%25A7%25C3%25A3o+estrat%25C3%25A9gica+a+busca+pela+vantagem+competitiva+pdf. This indicates a social engineering attack aiming to trick users into visiting a potentially harmful site.

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=fundamentos+da+administra%25C3%25A7%25C3%25A3o+estrat%25C3%25A9gica+a+busca+pela+vantagem+competitiva+pdf
    • http://files.cocopalmpictures.com/uploads/1/3/1/3/131380616/bijazudimegereb.pdf
    • http://files.clogherdonoige.org/uploads/1/3/0/7/130738714/4075135.pdf
    • http://xojixufiz.inclusiveplaygrounds.net/uploads/1/3/1/3/131383483/225415.pdf
    • https://cdn.shopify.com/s/files/1/0431/2308/1378/files/98111129561.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66656561998.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/24861821316.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/zevilenexibuvafuguwobowaz.pdf
    • https://cdn.shopify.com/s/files/1/0439/9477/5710/files/8217842174.pdf
    • https://cdn.shopify.com/s/files/1/0435/5679/8613/files/minecraft_sphax_texture_pack.pdf
    • https://cdn.shopify.com/s/files/1/0440/0077/2246/files/2973592963.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/giacomo_puccini_o_mio_babbino_caro.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/likibejuserawumemivebuwi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/78109765056.pdf
    • https://cdn.shopify.com/s/files/1/0432/5353/0788/files/tuxaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/6135/3371/files/47178374898.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0807/files/50952467903.pdf
    • https://cdn.shopify.com/s/files/1/0430/3860/5461/files/medal_of_honor_airborne_cheats.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_off00005093.bin
7d21509f6d82583b6b63fe8e60de3e5e589635a16e5f23b145a875b1228125cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x5093 6272 bytes
font_01_sfnt_off000064bb.bin
b5b5b633a58b78facb96b9b97d23adf169d239e3758a5827842439706cefccbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x64BB 12024 bytes