Malicious PDF — malware analysis report

Static analysis result for SHA-256 063bc9612c2e9678…

MALICIOUS

PDF

69.7 KB Created: 2020-09-01 05:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6779bf5709dc75be81c3a503fb6c1be7 SHA-1: a1ed2bd687935922108582e17197edb218086760 SHA-256: 063bc9612c2e96784230a9aa70c87d2bac977507eeae3c4a2a723ca07d1a47fc
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'https://ttraff.ru/wix?keyword=ciao+bella+song'. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links. The ML classifier strongly indicates maliciousness, supporting the conclusion that this document is designed to redirect users to harmful content.

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/wix?keyword=ciao+bella+song
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://static.usrfiles.com/ugd/b8c837_1a39c6296bda4a19bf40b2d4a636c05f.pdf
    • https://static.usrfiles.com/ugd/77941b_cb32f8631f2c4651814247cf0c51e7ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_976983f0ae774b2dadcb0fd2b6769143.pdf
    • https://static.usrfiles.com/ugd/4e6dd5_56f8dcf54e234fb1bca1682e4741f9af.pdf
    • https://static.usrfiles.com/ugd/30e015_c85333a6681342aeadc26e7b05680fd2.pdf
    • https://static.usrfiles.com/ugd/b8c837_e34959a53d414334ab9bb0462925bc75.pdf
    • https://static.usrfiles.com/ugd/21e6f2_864b2767c0724000abc33af5053eb38c.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_53301141d2ee4009965aa4eed9bdc345.pdf
    • https://cdn.shopify.com/s/files/1/0463/8572/5595/files/wipeduzegapu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6640/6550/files/burkes_outlet_application.pdf
    • https://cdn.shopify.com/s/files/1/0436/1984/4258/files/formato_certificado_de_origen_usa_dian.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/67864614007.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6833/files/74251239586.pdf
    • https://cdn.shopify.com/s/files/1/0434/1750/1853/files/cessna_310r_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/mevefafinoxitevi.pdf
    • https://cdn.shopify.com/s/files/1/0438/9509/5464/files/bathroom_sink_cad_block_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/9408/8616/files/clash_of_clans_hack_online_tool.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
    • http://www.gnu.org/licenses/gpl.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a23f.bin
ec728b39c0062a906b57957cbbd9cab045e567d6adbc30ef6cd435c00d2e5482		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA23F 4804 bytes
font_01_sfnt_off0000b298.bin
8e0ff037253138df6e4d02099c9b2a2978182bcb7c680e0104321eb83901d6e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB298 7844 bytes
font_02_sfnt_off0000c817.bin
55d87e786bb295ac2ca8a7569fb1f03ac233d28d8c9e43081d4d0c06ece4f90d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC817 12248 bytes
font_03_sfnt_off0000ef76.bin
51a0d0e1b7a4853341d2f6eca9f916c1a28c1fc1d34b20db35ae2d21dacd3dd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF76 17024 bytes

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