Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d0270a355fbac7c…

MALICIOUS

PDF

41.9 KB Created: 2020-08-31 08:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8d2ea98f19cdc5ddb015b76aa79816e SHA-1: d121bfec83fc784a649f325bdb95ff92a0f23b30 SHA-256: 7d0270a355fbac7c2f49b53bf38b002bffe51e4d9369eeed53db769758d45992
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://ttraff.com/wix?keyword=jaguar+xf+2008+brochure+pdf' is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains this URL, suggesting it's the intended lure. The presence of numerous other Shopify links, while marked as benign, likely serves to obscure the malicious link within a larger link farm.

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=jaguar+xf+2008+brochure+pdf
    • https://cdn.shopify.com/s/files/1/0432/5962/5627/files/71794873758.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11067845032.pdf
    • https://cdn.shopify.com/s/files/1/0432/2476/0484/files/zunugeniwasufajimuwavora.pdf
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/walaxawa.pdf
    • https://cdn.shopify.com/s/files/1/0430/0960/5791/files/javascript_iterate_object.pdf
    • https://cdn.shopify.com/s/files/1/0430/8071/2343/files/joledugotogodolisabusew.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/carpeta_de_investigacion.pdf
    • https://cdn.shopify.com/s/files/1/0433/4302/0183/files/de_verre_de_lanniversaire_pour_eng.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/zujuvunexoge.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3639/files/dikasifuregazumi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/estilo_apa_bibliografia.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/princess_dress_cut_out_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/0465/6790/files/14619808758.pdf
    • https://static.usrfiles.com/ugd/b8c837_55f1ad6a43b3409a855c7a4d5c45d363.pdf
    • https://static.usrfiles.com/ugd/0c41e7_b965529b9e154ab9bcdd424e274695f3.pdf
    • https://static.usrfiles.com/ugd/191a6d_68818e50ee3e444e8a418847559a95d8.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ff4.bin
80c05bc71826f4ac7a77b38a8232123afeb055089dffe446b64469fa677417a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF4 5872 bytes
font_01_sfnt_off000063df.bin
59bfef420df60d58a6db30e9fd5682d94ac45a13647ecd18efd12df8d7632522		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63DF 9688 bytes
font_02_sfnt_off0000852f.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x852F 16204 bytes

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