Malicious PDF — malware analysis report

Static analysis result for SHA-256 64fa30a6a5c44944…

MALICIOUS

PDF

40.0 KB Created: 2020-08-01 23:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2089232957a5e206495344bae73c6b87 SHA-1: 21e4c2d1d65c24a2886226b922da7d77d4daff19 SHA-256: 64fa30a6a5c44944f328696fef90a58235494de9b00726c8bb072a1882848f40
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or to obscure malicious destinations. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=export+data+from+r'. The document body and embedded links suggest a lure related to exporting data, likely to trick users into clicking through to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=export+data+from+r
    • http://files.honeycutthausshepherds.com/uploads/1/3/2/7/132740836/3453966.pdf
    • http://files.adidulza.com/uploads/1/3/0/7/130775490/0b4316e573.pdf
    • http://files.elliemartino.com/uploads/1/3/2/6/132681488/rojuvibutol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/punuwexepa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/bagibawikawekaraji.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2317/files/loxojinin.pdf
    • https://cdn.shopify.com/s/files/1/0432/1948/4839/files/suvuvaxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/9070435511.pdf
    • https://cdn.shopify.com/s/files/1/0432/8692/1374/files/dejisasedekutebuzim.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/15410236295.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/siwizobudavegi.pdf
    • https://cdn.shopify.com/s/files/1/0439/4565/6488/files/93555954073.pdf
    • https://cdn.shopify.com/s/files/1/0436/5287/4390/files/92041032641.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f09.bin
c688c2c166795206887539b93e31e648e5bd0fcfcd023f78fde0ef86b4897650
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F09 5000 bytes
font_01_sfnt_off00007002.bin
8444c410c47d339e37b5e7181d90790f9ca57e1906e02a1043f6cecf96e59a69
pdf-font-stream PDF embedded font (sfnt) at offset 0x7002 10452 bytes