Malicious PDF — malware analysis report

Static analysis result for SHA-256 de7437a5d966aee1…

MALICIOUS

PDF

98.2 KB Created: 2020-09-19 19:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: cf2e0901f7b51282f11b8a48cb419ff2 SHA-1: a332c24f1e1927ce4da625c0c214faa7c22c43a0 SHA-256: de7437a5d966aee10c263139b1409d387d047a54def623a58dc9493f99c854ca
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.club/wix?keyword=exit+path+unblocked+tyrone'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The embedded URL in the document body reinforces the 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.club/wix?keyword=exit+path+unblocked+tyrone In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1240/7967/files/38298983031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/agricultural_machinery.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/3304860525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7124/9311/files/ohioguidestone_fairlawn_ohio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5394/6782/files/baby_kannada_video_songs.pdfIn PDF document text
    • https://0fc6a63c-4731-424b-9ce3-c01e58ece0dd.filesusr.com/ugd/bbd3cf_5f86b940e1c74eb9a8366a90dd7e044c.pdf?index=trueIn PDF document text
    • https://970ea8cb-7504-4d1a-8b6d-d366f11ee360.filesusr.com/ugd/956c05_a4055a99004b42c5bc181f9150259acd.pdf?index=trueIn PDF document text
    • https://e49af8f0-06b5-478e-b2f8-62488ffb41ad.filesusr.com/ugd/7a359d_d4e226af0b2b4407838e055a7c6e7fbb.pdf?index=trueIn PDF document text
    • https://654ffc99-bde3-4a41-875d-83ff87bc3ec6.filesusr.com/ugd/d19ca0_ac8ec5c2335e44c9a64bcd6ce38f61b3.pdf?index=trueIn PDF document text
    • https://e1d984ff-a7e5-4210-ae35-456d79d90a9d.filesusr.com/ugd/479fa9_aa6bc691283c4ab3a3a3f9a87811e0b5.pdf?index=trueIn PDF document text
    • https://14b0f710-823f-4e55-a047-67fdec59dc90.filesusr.com/ugd/738632_7e6779051a7b416b948dee9386c6424d.pdf?index=trueIn PDF document text
    • https://4f1e6bc8-8cb9-4a76-9c3b-11d5be322b87.filesusr.com/ugd/7ea8bb_645d2adad5784851a73bec52bf9576b8.pdf?index=trueIn PDF document text
    • https://38d6518e-fa58-4846-a212-e3e1b963eb15.filesusr.com/ugd/595093_bcac979856c54c978180652a31d4d0f7.pdf?index=trueIn PDF document text
    • https://cfb35fe6-f7b9-4932-904c-d8b79f6b14c5.filesusr.com/ugd/50de67_b43c7b4494f04f5ea898d99b6f9c3346.pdf?index=trueIn PDF document text
    • https://c8e024d5-4094-494e-bf83-a51a6619b328.filesusr.com/ugd/585b1d_3b680c54334c47b0906bd8ba39c50bfc.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9725/8136/files/36648025120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5131/5111/files/71620467981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5031/9517/files/copplestone_primary_school_ofsted_report.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001470d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1470D 5312 bytes
SHA-256: 5a37db38491bc0e87944e20bb8d4261d5003d0ce03a4cdf7c4589bc6d380474d
font_01_sfnt_off0001591e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1591E 9956 bytes
SHA-256: 5a32aa2143c17af037061d284486d5c4350a8d24fe875da026cd751256e9fb4e

Open this report in the interactive analyzer, or submit your own file for analysis.