Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1561d612064a9d2…

MALICIOUS

PDF

43.8 KB Created: 2020-08-31 10:57:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 879507deb4e481e1497a79a2248b8772 SHA-1: 607af4dc79c923cef8e3389ccacf20eb598e4bfb SHA-256: e1561d612064a9d245496ceef0847a3cedf7487c506682ef26b222f162f46c91
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link, specifically 'https://ttraff.ru/wix?keyword=maisie+dobbs+book+order', which is designed to lure users to potentially harmful content. The document also exhibits characteristics of a link farm, embedding numerous other PDF links, many hosted on Shopify. The primary malicious intent appears to be directing users through the ttraff.ru redirector.

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=maisie+dobbs+book+order
    • https://cdn.shopify.com/s/files/1/0435/1423/2984/files/62247236816.pdf
    • https://cdn.shopify.com/s/files/1/0428/6251/0236/files/computerised_bookkeeping_exam_papers.pdf
    • https://cdn.shopify.com/s/files/1/0435/3048/5915/files/vugifigibun.pdf
    • https://static.usrfiles.com/ugd/e3ff21_d55a5feb40204b18ad495b2cb7fcc8e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_1eeb1d42e4af45868d3c1e9680d850aa.pdf
    • https://static.usrfiles.com/ugd/eb4c03_742a76c638f5402a93e6efc2015fb9ad.pdf
    • https://static.usrfiles.com/ugd/c618e9_e3b0b735e46e45ce86f784f0ded83397.pdf
    • https://cdn.shopify.com/s/files/1/0439/5663/3758/files/cardio_circuit_training_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/3826/0899/files/44775120121.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/79341312557.pdf
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/bticino_living_international_catalogo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/heart_shaped_box_book.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_off0000630a.bin
899937b4705fb8b704c24a301fcb8e3f8fe3a8c25587b7b0cb8f99352d2962a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x630A 4600 bytes
font_01_sfnt_off000072ad.bin
c4a8867cea6c6175a1a883f351fc0684c11807c9574948f31f362970bc8cddc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72AD 9928 bytes
font_02_sfnt_off000094a7.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94A7 4324 bytes

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