Malicious PDF — malware analysis report

Static analysis result for SHA-256 196ab588259210c8…

MALICIOUS

PDF

76.6 KB Created: 2020-08-30 22:20:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a50fd4f66f94d8b0e3560b3ef65370b8 SHA-1: 67ec8675a298e19a21674f140feff86082718979 SHA-256: 196ab588259210c805511af3bd6522dc8db8f1d58bcff8793b2d85cbe5fcb390
154 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'https://ttraff.com/wix?keyword=ascii+table+symbols+alt'. It also exhibits PDF_SEO_LINK_FARM behavior with 24 embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains references to the redirector URL and other embedded links, suggesting a phishing or scam attempt designed to lead users to malicious infrastructure. No scripts were extracted, but the overall structure and URL analysis indicate a malicious intent to redirect users.

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/wix?keyword=ascii+table+symbols+alt
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0457/3167/6326/files/caramelldansen_beat_saber.pdf
    • https://cdn.shopify.com/s/files/1/0432/8217/0022/files/2008_maserati_quattroporte_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pizejop.pdf
    • https://static.usrfiles.com/ugd/7f46b5_bc96515e15d44c72bd26f4c644e80bba.pdf
    • https://static.usrfiles.com/ugd/24853a_9593e5c3299542a586d059b1fc0530b0.pdf
    • https://cdn.shopify.com/s/files/1/0435/8488/0798/files/james_sheets_evansport_ohio.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7351/files/83226400541.pdf
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/60167750334.pdf
    • https://cdn.shopify.com/s/files/1/0433/6589/2245/files/38606265143.pdf
    • https://cdn.shopify.com/s/files/1/0438/3247/5798/files/3432566143.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/buxirovojovupenuzazadalu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/zafuvizixak.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c50.bin
39826eb2abb7104d8de23ae8aa561c8cc5242c0f1fdbeb23ac49305fd3c4690d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C50 3792 bytes
font_01_sfnt_off000089dd.bin
41de77a38e1048955e1dd67e42fca82d434aa160eff9163870fd1c3539d54565		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89DD 5080 bytes
font_02_sfnt_off00009b08.bin
58817404e031c233615dd16f240cf52b9d7becabb898f5e354ee261ec2217ae6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B08 2900 bytes
font_03_sfnt_off0000a6ea.bin
b1488ac926ff8729475024d86b36a403da75106d78e9f653dd4d73158bf64284		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EA 34424 bytes
font_04_sfnt_off0000ffe9.bin
46095609a8761addac0bba41f362b5e5f95ac7de97495f7e8aa8565f47e4f630		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE9 20904 bytes

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