Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fa9aa62003f003d…

MALICIOUS

PDF

139.0 KB Created: 2020-09-07 11:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d2aa5e0f724e6d34d4ccae7648bb817 SHA-1: fae788fa6123d1abc697c8fbbe77536681bd6d79 SHA-256: 6fa9aa62003f003d400e5fa6e0c1165def1f49c1f4652c7a6463db6f2c0549fa
154 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, ttraff.cc, disguised as a search result. The document body, though heavily obfuscated, contains the same lure text. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic, likely intended to drive traffic to malicious sites. No scripts were extracted, but the primary malicious action is the redirection via the embedded URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/pify?keyword=beatles+revolver+full+album
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/xadawevef.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9089/files/34253284445.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/messenger_lite_di_uptodown.pdf
    • https://cdn.shopify.com/s/files/1/0435/5309/5844/files/babatijuwizoru.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/18521753006.pdf
    • https://cdn.shopify.com/s/files/1/0431/3972/7509/files/correlation_matrix_r.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/zazitusuxafifovaluwaw.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/raxisapod.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6554/files/posebusibebozevev.pdf
    • https://static.usrfiles.com/ugd/01bc73_dab274ae2e6d4b17964539d3a28817bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_58492f66ab424fb8bc72b81a71a7c012.pdf
    • https://static.usrfiles.com/ugd/f0e51d_a7deab529435451a9e63c3e00563d82b.pdf
    • https://static.usrfiles.com/ugd/49f5ef_f4593ed960024a7ebba566b01f5ae724.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://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_off0001baee.bin
dd376354e6489bdffe37f51c91587cbe1bb45675be992d355d29d671ca1cc225		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BAEE 7136 bytes
font_01_sfnt_off0001d353.bin
1ddda6a5e36cf3bba0d14257fd06f8ad5666ac300dc7e0155e3e6e07748bbf57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D353 5164 bytes
font_02_sfnt_off0001e4d5.bin
b7724df4be958e8b2b7e838e0d78c0dc70ba8969fe46b1bc7c56ea1d708c43d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E4D5 10540 bytes
font_03_sfnt_off000208fb.bin
184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832		 pdf-font-stream PDF embedded font (sfnt) at offset 0x208FB 16120 bytes

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