Malicious PDF — malware analysis report

Static analysis result for SHA-256 2220b537d5fc6f07…

MALICIOUS

PDF

46.1 KB Created: 2020-08-08 14:13:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 695e16abc08deef89c9f66b402719f06 SHA-1: 2900a7a783f830599bf4701848983b7fd0208f7d SHA-256: 2220b537d5fc6f077a5bbf5074a8230ed3f4816f848da7ed2c67bb220ff65352
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files hosted on various domains, including a known malicious redirector. The document body, though partially corrupted, contains the URL 'https://ttraff.ru/pify?keyword=should+have+ought+to+have+exercises+pdf', which is flagged as a malicious redirector. This indicates a likely attempt to direct users to malicious content through a link farm or redirector strategy.

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=should+have+ought+to+have+exercises+pdf
    • http://files.boerneamlegion.org/uploads/1/3/0/9/130969762/gofoleruwobej_jizifut.pdf
    • http://files.vincentrussodesigns.com/uploads/1/3/2/6/132695813/4033198.pdf
    • http://files.msdewarsclass.com/uploads/1/3/0/7/130775229/juvimozogiwukub_pikoru_gufiguginipera.pdf
    • http://denefaxa.cebuanohomes.com/uploads/1/3/1/0/131070152/b94fdf5b.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/vivazelikukufaxedutalul.pdf
    • https://cdn.shopify.com/s/files/1/0432/9105/0137/files/92069313141.pdf
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/bohrer_schleifen_anleitung.pdf
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/16334046337.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5910/files/relirimijuwemosopaga.pdf
    • https://cdn.shopify.com/s/files/1/0434/6567/0806/files/pakonovox.pdf
    • https://cdn.shopify.com/s/files/1/0435/2661/9288/files/industrial_organizational_psychology_aamodt.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3899/files/84199680678.pdf
    • https://cdn.shopify.com/s/files/1/0448/6771/5234/files/mba_cet_result_date_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2906/8949/files/46181653394.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2629/files/23272659932.pdf
    • https://cdn.shopify.com/s/files/1/0444/0604/6886/files/best_forex_technical_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/71638983899.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_off000066f5.bin
14a3ef5d14e4397302b6ea6b8e579431a7dc6da09be163c93c474608c31f18d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x66F5 5424 bytes
font_01_sfnt_off0000798d.bin
11dac8497d5b6e216d575dd9a24aaa62ed4c762e2f6b1e1c8a0a80b65c2c3372
pdf-font-stream PDF embedded font (sfnt) at offset 0x798D 10420 bytes
font_02_sfnt_off00009d21.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D21 4324 bytes