Malicious PDF — malware analysis report

Static analysis result for SHA-256 39ffda1f3bafbdf7…

MALICIOUS

PDF

47.6 KB Created: 2020-08-02 18:12:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4546b5c15ab2db0628520b300eea5fb1 SHA-1: 17a314d728d3eef49428f4403d16cb7ea22106b2 SHA-256: 39ffda1f3bafbdf7c4757ff31b911f33333b1fc3eb594ff60187d8f0e1880d67
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of the primary links points to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'And so this is christmas lyrics' and the malicious URL, suggesting a lure or spamming technique. The presence of numerous Shopify-hosted PDF links, some of which are confirmed benign, alongside the malicious redirector, indicates a likely SEO-based link farm or spam campaign designed to distribute malicious content.

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=and+so+this+is+christmas+lyrics
    • http://files.sonialopezcoaching.com/uploads/1/3/1/6/131606782/vuxase.pdf
    • http://files.ironbreedlemc.org/uploads/1/3/0/9/130969389/341c1c3591.pdf
    • http://files.missmurphyscience.com/uploads/1/3/1/6/131637055/lukov-xivawaxevem-zulabiduvuruj-gukusopajari.pdf
    • https://cdn.shopify.com/s/files/1/0435/5581/5583/files/dinemutazumunetos.pdf
    • https://cdn.shopify.com/s/files/1/0431/7842/6534/files/operating_systems_concepts_9th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0428/5772/6118/files/bupemu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/diniladimazaraxosi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6662/2105/files/10586674440.pdf
    • https://cdn.shopify.com/s/files/1/0431/0922/0501/files/99084023743.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/78591386603.pdf
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/71971885553.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/43634721443.pdf
    • https://cdn.shopify.com/s/files/1/0434/5135/1207/files/71189425506.pdf
    • https://cdn.shopify.com/s/files/1/0431/1577/4108/files/92073886316.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30072581460.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_off00007c29.bin
baca8afc431f80df3f67d83f8aaa8f6aa87ac70a264584ab86bd0a972350c9a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C29 5268 bytes
font_01_sfnt_off00008def.bin
d53d2919847f03c0ec3aee798cacfdd3e44ebab9afef484c2f09986f0a4feb9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEF 10528 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.