Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba323a19477b215…

MALICIOUS

PDF

47.4 KB Created: 2020-08-30 11:59:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f12e503dbdecb7508c1f32a0599a0991 SHA-1: af3caee813041437030b8bea519de1222ae47d81 SHA-256: 0ba323a19477b215cc962da44b912bab504b96c90bb55790e833fa2de80e6c6f
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 a redirector service. The primary malicious URL identified is https://ttraff.cc/wix?keyword=wwe+aj+john+cena+beso, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting an attempt to drive traffic to malicious infrastructure.

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=wwe+aj+john+cena+beso
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_7184c0ae76c04ed7bf1622da833e4e82.pdf
    • https://static.usrfiles.com/ugd/a382ee_3fc2525b741c491ca6a4fa56df848320.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_b3276632fb2b4971b507ddfde41d6b2d.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/ladagowoposopinaju.pdf
    • https://cdn.shopify.com/s/files/1/0444/5346/2183/files/decomposition_synthesis_single_double_replacement_reactions_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/albinismo_unam.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/72677398247.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6976/files/latam_ecuador_informacion_de_vuelos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27039997465.pdf
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/nozove.pdf
    • https://cdn.shopify.com/s/files/1/0434/5482/4598/files/tratados_internacionales_unam.pdf
    • https://static.usrfiles.com/ugd/9c0842_c28e77a8dd384851a3e19b8229e5fece.pdf
    • https://static.usrfiles.com/ugd/b8c837_fba2d7fd4ffa4bb090902dfd8f85fd70.pdf
    • https://static.usrfiles.com/ugd/b8c837_fba2452068a84ca7a8008921feeaa2fe.pdf
    • https://static.usrfiles.com/ugd/9c43ec_dfd8a853ed94495abb21f3fe26a2c10f.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071e2.bin
5d612ade1ce9334feaee2ee6c4af1498683b42519c95a4a82e076a89286c6d7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E2 5080 bytes
font_01_sfnt_off0000833c.bin
7c4880219e9625d2a4e9dd9baa4d28a857a57833d139bcdeda5c52338edb6e7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x833C 1964 bytes
font_02_sfnt_off00008c48.bin
a6b7b6cad52c30379f659538990e25721f8bb2e014d7ca97aad21a719c25f0ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C48 10636 bytes

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