Malicious PDF — malware analysis report

Static analysis result for SHA-256 de576d04c36ff383…

MALICIOUS

PDF

40.4 KB Created: 2020-08-14 02:10:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c420a7085776d5662b1dee2e31560ece SHA-1: bf755924712f2ee313e6221cc329fe5deaf99042 SHA-256: de576d04c36ff383be8956eab59e93dae7a9703da250a87f50ec6776ff5e52c9
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wb?keyword=vogels%20thin%20505%20manual', which is identified as a malicious redirector. The presence of multiple Shopify-hosted PDF links suggests an attempt to obscure the true malicious destination. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wb?keyword=vogels%20thin%20505%20manual
    • http://nelofil.thegroundsatconcord.com/uploads/1/3/2/3/132303382/feponixukakikol.pdf
    • http://zuwox.dunegrasscreations.com/uploads/1/3/1/3/131383483/todibuzimanod.pdf
    • http://luxudima.herbesque.com/uploads/1/3/1/0/131070792/geruraponake.pdf
    • http://files.absolutespeedmag.com/uploads/1/3/2/6/132683135/puzuxorixasofop_salagomir_zitaw_rivajon.pdf
    • http://lunen.rissmusicschool.com/uploads/1/3/0/9/130969204/pelupodiwo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/zoregogubebolegawimon.pdf
    • https://cdn.shopify.com/s/files/1/0450/2922/8702/files/54029509182.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/agile_it_organization_design.pdf
    • https://cdn.shopify.com/s/files/1/0437/8093/1742/files/fesogufuwana.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/pepevetefusot.pdf
    • https://cdn.shopify.com/s/files/1/0432/1722/3847/files/13985717019.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/buzizawirosurikesif.pdf
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/tisaniz.pdf
    • https://cdn.shopify.com/s/files/1/0428/1031/0822/files/fadurikakizole.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/62062453471.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5671/files/jomotegukonaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/free_books_download_for_computer_science_engineering.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_off0000602a.bin
fc0b069ad9deffb0d9f1e904bd0fff46ca80872285e4d0c3e3db9cfcd766e3be
pdf-font-stream PDF embedded font (sfnt) at offset 0x602A 5236 bytes
font_01_sfnt_off000071d6.bin
5784f4eea28ea519f230f19c58f472e1452afd6c6b17b2e3c7b118272301a040
pdf-font-stream PDF embedded font (sfnt) at offset 0x71D6 10244 bytes