Malicious PDF — malware analysis report

Static analysis result for SHA-256 14bc27d40fc6b280…

MALICIOUS

PDF

45.0 KB Created: 2020-08-10 21:02:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe8e780cc466f2150376880e2e72ed3a SHA-1: 7b77498440a5b028ef3c74197d302c41fddf3e29 SHA-256: 14bc27d40fc6b280d39b4a3c94a13a82de34b5983d8a2d64c9c896134cd12404
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to direct users to malicious content. The presence of numerous other PDF links, many to Shopify domains, indicates a potential link farm or SEO manipulation tactic to obscure the primary malicious intent.

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=secret+of+secrets+abdul+qadir+jilani+pdf
    • http://files.theseasonalapothecary.com/uploads/1/3/1/4/131483266/wefutitarabusudelum.pdf
    • http://files.latinmasshv.org/uploads/1/3/1/1/131163957/d1bcab366e5c421.pdf
    • http://files.batimap.com/uploads/1/3/1/6/131607544/sifugilok_kebuku_sumazotiruwi.pdf
    • http://files.lincolncollegechapelchoir.com/uploads/1/3/1/6/131636947/wevox.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5247/4280/files/26179914993.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5445/files/wiwalejowuropexadilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7619/8305/files/fexoxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5592/files/44055406187.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/newedalumumozabavimozifot.pdf
    • https://cdn.shopify.com/s/files/1/0428/8253/1481/files/23782406015.pdf
    • https://cdn.shopify.com/s/files/1/0437/1664/0923/files/xigafenegutiwakos.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/26398541245.pdf
    • https://cdn.shopify.com/s/files/1/0431/3507/4465/files/fogom.pdf
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/85982643478.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0439/files/gudimu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1031/files/47702542872.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/28046827229.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_off00007098.bin
1bdfc6783bbfb4ccd30acc9bb3389c2e4c8f1fee0180b8a5dd5cf4a62b8386f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7098 5592 bytes
font_01_sfnt_off000083a0.bin
bb0b80f4d16fd4c2ab5b88f40ccf565151a76c4d8b5f2bee9f1d89b7526a7638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A0 10316 bytes

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