Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aa2373f9b0198f2…

MALICIOUS

PDF

44.7 KB Created: 2020-08-14 11:23:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b05513ac653aad3ff229de4cfb1a0b0d SHA-1: d2c3285d865b7ca5033bb886c4f852ac68849085 SHA-256: 2aa2373f9b0198f2b5733a856282dd7f4f245f3beb9755af19b6171499fb9f91
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, indicating a link farm or redirection strategy. One prominent URL, 'https://ttraff.ru/pify?keyword=stored+procedure+vs+view+performance', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains references to this malicious URL and other Shopify-hosted PDFs, suggesting a coordinated effort to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=stored+procedure+vs+view+performance
    • http://xilenim.buttonplanet.com/uploads/1/3/0/8/130813765/lenidusegut_rekujulade.pdf
    • http://fapatixox.kingguideservicearizona.com/uploads/1/3/0/8/130874330/d6a0f.pdf
    • http://jirof.rose-annerussell.com/uploads/1/3/0/8/130814297/vowinat.pdf
    • http://finek.thegoodsevents.com/uploads/1/3/0/7/130776644/3475735.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3747/files/pemisumiravevomajurujadek.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/fibalup.pdf
    • https://cdn.shopify.com/s/files/1/0447/9988/5463/files/92736512447.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/25748743573.pdf
    • https://cdn.shopify.com/s/files/1/0437/0019/1387/files/dalefefebeno.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/cetosis_en_vacas.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6307/files/tatola.pdf
    • https://cdn.shopify.com/s/files/1/0431/4382/3511/files/sudixijediw.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/66728399050.pdf
    • https://cdn.shopify.com/s/files/1/0433/7745/9365/files/50164787774.pdf
    • https://cdn.shopify.com/s/files/1/0433/1615/0427/files/97408248580.pdf
    • https://cdn.shopify.com/s/files/1/0431/7632/9373/files/gigulugilewilaxedogejuju.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6411/files/the_life_of_pablo_album_download_zip.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_off00006db6.bin
13fb099278a8bb0297cc16a6ce3cc024fc611f0d38354bfbca30338bd1497890
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB6 5524 bytes
font_01_sfnt_off0000807a.bin
f1d47f8ed2b382144c687a97b9ce8e2a1203384ccd3d7b4673a87ce4d28eca8b
pdf-font-stream PDF embedded font (sfnt) at offset 0x807A 10964 bytes