Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d2a49f61d97231…

MALICIOUS

PDF

46.2 KB Created: 2020-08-23 01:07:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a86360e96663b45610a2d382797f021 SHA-1: cc36fdc3b7ceb326ccda3463b6413fe7c3cc0a51 SHA-256: b6d2a49f61d97231b7a64d9c3f79aae7088dfc20fc96a0c20b91bd36ba8def8b
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used in phishing or malware distribution. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL 'https://ttraff.cc/pify?keyword=babusan+all+songs+free'. Additionally, another critical heuristic identified a PDF link farm, with many links pointing to Shopify-hosted PDFs. The document body contains garbled text but includes the suspicious URL and several Shopify URLs.

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.cc/pify?keyword=babusan+all+songs+free
    • http://files.kohlservice.com/uploads/1/3/1/4/131483685/1215030.pdf
    • http://files.foodieplayschef.com/uploads/1/3/1/4/131407036/7593995.pdf
    • https://cdn.shopify.com/s/files/1/0431/3668/0098/files/77147485298.pdf
    • https://cdn.shopify.com/s/files/1/0440/3508/0342/files/dusegopanepulufejepafeni.pdf
    • https://cdn.shopify.com/s/files/1/0436/7505/8329/files/pedanaveru.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5671/files/lavosixo.pdf
    • https://cdn.shopify.com/s/files/1/0439/2484/8795/files/traditional_ballad.pdf
    • https://cdn.shopify.com/s/files/1/0441/2666/6904/files/52350579206.pdf
    • https://cdn.shopify.com/s/files/1/0433/8506/1541/files/bamevuzafojabikabise.pdf
    • https://cdn.shopify.com/s/files/1/0429/3692/6374/files/advanced_javascript_books.pdf
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/57674676804.pdf
    • https://cdn.shopify.com/s/files/1/0447/9402/0000/files/how_to_rip_audio_from_video.pdf
    • https://cdn.shopify.com/s/files/1/0434/8153/0534/files/arkestra_bhakti_dj_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/6472/9512/files/23586334854.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_off00006be5.bin
140d9b171fc09f207c3bddc01de88471b023884b237a62492d355be9d42dd8ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE5 5124 bytes
font_01_sfnt_off00007d5c.bin
0f9738b7235bc53da2c5d7a943e05efd93ce9aaf3c568d38365557b80daefb1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5C 14424 bytes