Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e000d6859078e92…

MALICIOUS

PDF

41.1 KB Created: 2020-08-31 06:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d95cb91884055160cc2bd915a65effe4 SHA-1: 7b5a7499af5eda6b2c69bb3e30d517d0a9910061 SHA-256: 7e000d6859078e92e425921e409527416ae61def7a2b4c1615481dffab990638
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm designed to manipulate search engine results or lure users to malicious content. One of the primary links directs to a known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=conan+exiles+souffre
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/89363e_682f867c30aa4ed0aa144f64a7f3528e.pdf
    • https://static.usrfiles.com/ugd/cafc24_4185e07f3284473e8725c51c04227bed.pdf
    • https://static.usrfiles.com/ugd/e745be_c90973c07045458e9cd8a14dc6663350.pdf
    • https://static.usrfiles.com/ugd/0a0016_7cf37d8c84b54644bd9a9b5c14d4bc24.pdf
    • https://static.usrfiles.com/ugd/7baf93_138183f4b15a4ca69c4303c4729dd64d.pdf
    • https://static.usrfiles.com/ugd/e5a943_e1e8126d58ef4c0f8cfeb0a5365a2597.pdf
    • https://static.usrfiles.com/ugd/565485_e2ef5565106a4fd4ad021affc677fe83.pdf
    • https://static.usrfiles.com/ugd/b8c837_36cfaeb8f915466e806fbb61604331fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_312ad0571ab1466f833c3adc3bb07fe7.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/92715800110.pdf
    • https://cdn.shopify.com/s/files/1/0435/7062/6723/files/darkness_rises_witch_skill_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/male_autopsy_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/taxiw.pdf
    • https://cdn.shopify.com/s/files/1/0465/2600/5406/files/watosivenabilekebapaze.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/38143746710.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060b6.bin
e854f0417246eb2d94a23f039e7a24e54a69046aef9f22083d5769014b0dc781
pdf-font-stream PDF embedded font (sfnt) at offset 0x60B6 4732 bytes
font_01_sfnt_off000070d8.bin
f58dcb4209279a1fca2a2e6deccf3b9f1d02273fbb415bff4e4d457c32734315
pdf-font-stream PDF embedded font (sfnt) at offset 0x70D8 12372 bytes