Malicious PDF — malware analysis report

Static analysis result for SHA-256 63808188eedf7e49…

MALICIOUS

PDF

47.1 KB Created: 2020-08-31 08:08:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea1f6fa0d7d3105cc878420c46fe6fa2 SHA-1: 2db45ecce636ffc4cf18ad786e69926f439504dc SHA-256: 63808188eedf7e49b0ae07db01e53312b3bd80724a9ff57d7b829708c9c44c34
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'https://ttraff.ru/wix?keyword=eidbrecher+divinity+2'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous links to other PDFs, many of which are hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the link farm structure suggests an attempt to redirect users to malicious content, likely as part of a phishing or scam campaign.

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=eidbrecher+divinity+2
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/erick_sermon_just_like_music_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0431/6810/4610/files/kewirodotutig.pdf
    • https://cdn.shopify.com/s/files/1/0431/7364/2406/files/essentials_of_statistics_triola.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0000/2717/files/telugu_bodhana_paddatulu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0749/0717/files/mezekubumekadi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1815/7221/files/deloitte_global_impact_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lamafavikunidamekisuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/7624/5922/files/riwisev.pdf
    • https://static.usrfiles.com/ugd/dc98cc_59da795808464bf28c26cee45bd45f0e.pdf
    • https://static.usrfiles.com/ugd/b8c837_3f859ae14ad842668a2045c447be4da2.pdf
    • https://cdn.shopify.com/s/files/1/0463/2077/9426/files/lutudu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2204/1767/files/dulezafewifipizatidawuxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9462/1862/files/95939502249.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_off00006f50.bin
8f60293424642a4fa2a7cee6400024adf28914ca78b8cca9c9afe77f9c330d77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F50 4676 bytes
font_01_sfnt_off00007f2f.bin
652f2d71fde40dad361a80600fd8cfd09805b1c26bf18ca47c759e698b2fe727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2F 10128 bytes
font_02_sfnt_off0000a1a5.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A5 4324 bytes

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