Malicious PDF — malware analysis report

Static analysis result for SHA-256 029fc9847f5ee9d4…

MALICIOUS

PDF

38.5 KB Created: 2020-08-22 19:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da159674a78881d727971140b856209f SHA-1: 8825ea773f46fc6d859719cbcbe112377f2a7fd2 SHA-256: 029fc9847f5ee9d4f9ede7b4e98b4419540d94c83a3bc796d3ef743da7eb1939
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and a reference to a TV guide, suggesting a lure. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic. No scripts were extracted, and the family is unknown.

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.ru/pify?keyword=tv+guide+perth+wa+saturday
    • http://files.beyondshipsart.com/uploads/1/3/2/7/132740873/ronuba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/advantages_of_relational_database_management_system.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3907/files/73819201310.pdf
    • https://cdn.shopify.com/s/files/1/0458/1412/0614/files/bazetejokexenofuxamiwu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4539/5359/files/xubowil.pdf
    • https://cdn.shopify.com/s/files/1/0434/1510/9794/files/zettai_karen_children_the_unlimited.pdf
    • https://cdn.shopify.com/s/files/1/0429/0261/8278/files/tiny_archers_mod_unlimited_gold_gems.pdf
    • https://cdn.shopify.com/s/files/1/0437/4485/4165/files/sazujodixufemi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/sazofoxubederox.pdf
    • https://cdn.shopify.com/s/files/1/0432/1060/4705/files/auxiliary_verbs_and_modal_verbs.pdf
    • https://cdn.shopify.com/s/files/1/0447/8962/9085/files/03_kia_sorento.pdf
    • https://cdn.shopify.com/s/files/1/0436/0480/3746/files/31585075965.pdf
    • https://cdn.shopify.com/s/files/1/0447/7383/4901/files/fuwekogof.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_off00005905.bin
74a5c9ad73b52ca852a0cea02f6df4b6a4ec1b1e9ce5d58c928a71bb47aefe89
pdf-font-stream PDF embedded font (sfnt) at offset 0x5905 5392 bytes
font_01_sfnt_off00006b73.bin
718ef94210aba4b011c93192fe065b24c5be5f9d09c02c35b604dfeca8530c67
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B73 9980 bytes