Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ed8b0006b5e0c0…

MALICIOUS

PDF

65.3 KB Created: 2020-08-09 18:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0cb67ed410fe5e98f7efb4f8baeed46a SHA-1: 6fbb596249ff93f26bb4f24a9c0af4943d65baed SHA-256: d6ed8b0006b5e0c01e6ef247a66927ad220f0cae9d151d32f0725cf8136c56b0
152 Risk Score

Malware Insights

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

The PDF contains a deceptive title suggesting an audit report, likely to trick the user into clicking the embedded link. The primary link directs to a known malicious redirector, which then likely leads to further malicious content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to improve SEO for malicious content or to obscure the true destination.

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.com/pify?keyword=audit+report+of+reliance+industries+2020+pdf
    • http://files.munonne.dk/uploads/1/3/0/7/130739510/b05f115.pdf
    • http://files.ivnonline.info/uploads/1/3/1/4/131408581/guzenojol_xazal_vavopi.pdf
    • http://files.phase3security.com/uploads/1/3/0/8/130813466/7551387.pdf
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/baritomosep.pdf
    • https://cdn.shopify.com/s/files/1/0431/3055/2474/files/a_b_c_d_e_do_trauma.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3979/files/jukabalobazow.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.pdf
    • https://cdn.shopify.com/s/files/1/0428/7715/7542/files/british_slang_words_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/xajabesa.pdf
    • https://cdn.shopify.com/s/files/1/0441/1791/7848/files/surrealismo_pintura.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/68461888542.pdf
    • https://cdn.shopify.com/s/files/1/0437/7634/4225/files/62002258872.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57515970725.pdf
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/fikebigizesiwobojag.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_off0000b24f.bin
2e1eca2f28720dd5bdcbaa376e6e4f4e948ee2918b54342b7801d50efc9e28de
pdf-font-stream PDF embedded font (sfnt) at offset 0xB24F 5412 bytes
font_01_sfnt_off0000c4c5.bin
67a89d8502e40e563f6af881c13219279aee42b22ddacd40e1799e6d61162b3c
pdf-font-stream PDF embedded font (sfnt) at offset 0xC4C5 15880 bytes