Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f50b66da668563d…

MALICIOUS

PDF

45.8 KB Created: 2020-08-26 14:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eccdbef03b6de0b2371cff73d385d268 SHA-1: 65b52a2d86580f5ff488a20ecdd89c6b0d070293 SHA-256: 6f50b66da668563dc9ef8af7bf947bfd1075242a09b48fd9204b9ce2c908b5b3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection scheme. One prominent URL, 'https://ttraff.ru/pify?keyword=love+and+hip+hop+new+york+season+8+episode+2', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains similar URLs and appears to be a lure related to 'Love and Hip Hop New York'. The ML classifier strongly indicates maliciousness, and the overall structure points to a phishing or malware distribution attempt.

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=love+and+hip+hop+new+york+season+8+episode+2
    • http://files.misfitcrusaders.com/uploads/1/3/0/8/130814672/634f8e.pdf
    • http://files.newtekjournalismukworld.com/uploads/1/3/0/8/130874120/sidonesafegomazupop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/vevobeve.pdf
    • https://cdn.shopify.com/s/files/1/0429/6504/1308/files/17442514972.pdf
    • https://cdn.shopify.com/s/files/1/0437/0333/7114/files/sifatuxoluletasuridizu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6079/7333/files/the_5th_wave_book_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/0689/3985/files/beginning_algebra_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/6976/6808/files/bamogibekun.pdf
    • https://cdn.shopify.com/s/files/1/0436/0460/7139/files/notice_of_resignation_template.pdf
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/wopovegudijivufebagij.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zavoriduxosijalas.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/revista_de_administrao_de_empresas.pdf
    • https://cdn.shopify.com/s/files/1/0439/3625/2072/files/49219853513.pdf
    • https://cdn.shopify.com/s/files/1/0434/2402/2680/files/8441076578.pdf
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/2013_hyundai_sonata_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/jivovifa.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_off00007490.bin
9792eca7e96fb8d75dc2af0a5117582ae88efbb6f65064cc0ca29f1831339cf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7490 5600 bytes
font_01_sfnt_off000087b2.bin
fb02d6dbeff72dedfd27120698576e7bf2956ac3dae58a7350ff55debaed2216		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87B2 10028 bytes

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