Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d109b7ce97661fc…

MALICIOUS

PDF

40.8 KB Created: 2020-08-17 12:17:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17a34ce10433e695dda9b31ebd610e18 SHA-1: d5867cf5c31ec5b68bcb10837b835833506668d7 SHA-256: 1d109b7ce97661fc17091fd43a0f7e11f0a5ad51dc02b18d8853f85ec26a0797
128 Risk Score

Malware Insights

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

The PDF file contains embedded links that are part of a link farm, with one critical heuristic firing indicating a redirect to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to a 'freelance website design contract template' and a URL that appears to be a lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a tactic to distribute malicious content or manipulate search engine results.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=freelance+website+design+contract+template
    • http://files.livingcanvasmedia.com/uploads/1/3/2/6/132681891/luzezuvepemo.pdf
    • http://files.xebex.eu/uploads/1/3/1/3/131380342/duvogiwamoparinus.pdf
    • http://deruvaz.4muttspetspa.com/uploads/1/3/1/0/131069934/purufokegisones.pdf
    • http://files.goolsbygreatdanes.com/uploads/1/3/1/3/131384679/sugirezunuvu.pdf
    • http://posev.majesticeggdesigns.com/uploads/1/3/1/4/131482995/b7068.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/70977369711.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/maminowovuwidivav.pdf
    • https://cdn.shopify.com/s/files/1/0428/7044/0095/files/fivotegexuputomevapitata.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/46799576923.pdf
    • https://cdn.shopify.com/s/files/1/0437/8994/2945/files/29759544439.pdf
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/buku_amanat_haji_hadi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/sutujavulusupavidevug.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2483/4982/files/66843991658.pdf
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/roropob.pdf
    • https://cdn.shopify.com/s/files/1/0434/7333/8533/files/42767079026.pdf
    • https://cdn.shopify.com/s/files/1/0428/5261/4311/files/pakese.pdf
    • https://cdn.shopify.com/s/files/1/0437/3161/5909/files/xosegu.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_off00006132.bin
f87199c4f2353c657cf1dfb65d82127e633dbe6326659bebc4c4a04ddd751f73
pdf-font-stream PDF embedded font (sfnt) at offset 0x6132 5580 bytes
font_01_sfnt_off00007418.bin
724ffe7a456715e5072218ae4e28777fcd787cc7fec3d357aa0cf4f1de73f770
pdf-font-stream PDF embedded font (sfnt) at offset 0x7418 9932 bytes