Malicious PDF — malware analysis report

Static analysis result for SHA-256 95b33d7dae2a700a…

MALICIOUS

PDF

33.4 KB Created: 2020-08-20 01:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78de49a8e3a938a5fb5444182489be20 SHA-1: 880bec9cd70259bfbe765baa9446484ea91d47cb SHA-256: 95b33d7dae2a700ac748511409ffe94ed5a1dda2ef7f6b5ec60dd0921e09c948
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to shopify.com domains, but one critical link directs to a known malicious redirector. The document body text, though heavily obfuscated, contains the string 'Centring work pdf' and the malicious URL, suggesting a lure to trick users into clicking through to potentially malicious content. The presence of a link farm and a redirector indicates a phishing or scam attempt.

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.com/pify?keyword=centring+work+pdf
    • http://files.e-c-m.ca/uploads/1/3/1/4/131411596/romofo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/kuxigiratafarubilaxawaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/nudubomut.pdf
    • https://cdn.shopify.com/s/files/1/0437/4124/9690/files/wozapovosenirediwawovej.pdf
    • https://cdn.shopify.com/s/files/1/0428/5094/3142/files/korufumowiviwodoxux.pdf
    • https://cdn.shopify.com/s/files/1/0431/8907/6117/files/21147711657.pdf
    • https://cdn.shopify.com/s/files/1/0437/6395/7918/files/5e_monster_manual_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/5066/3073/files/felazugejiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0739/files/sinuwutopusebozerasim.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/alignment_chart_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/jomuliguvazisus.pdf
    • https://cdn.shopify.com/s/files/1/0430/7592/8215/files/merikidezu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0173/2520/files/poweredge_r730_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/kudebalaxegedutem.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_off0000473c.bin
c2eb7802f60a9327376d37c2119ede09264e3958430066f5f3b935bf1d24879d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x473C 4852 bytes
font_01_sfnt_off000057e7.bin
004eae23cb5e4be1f58824caddc50fcadd20e8357093f34e7d0b91d21a945bcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57E7 9796 bytes

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