Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7c0bafdb8bdd488…

MALICIOUS

PDF

41.0 KB Created: 2020-10-02 17:10:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 06411e9ebb52c351a7fd2763323f4843 SHA-1: 57ff3123d468a2927eb2caf3a46b8216fc5a3cac SHA-256: e7c0bafdb8bdd48823bb15c614180716e58260028defd167bd61856b86fb5856
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is indicative of a phishing or malicious content delivery attempt. The heuristic 'PDF_SEO_LINK_FARM' suggests the document is part of a larger scheme to manipulate search engine results or distribute content through numerous linked PDFs. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classification strongly suggest 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://ggtraff.ru/strik?keyword=uncle+tom%2527s+cabin+study+guide+progeny+press In PDF document text
    • http://pevuzujer.a-r-a.org/uploads/1/3/1/4/131438062/dolezuwi-nitijaboguguka.pdfIn PDF document text
    • http://gapadaxar.inganamort.com/uploads/1/3/0/8/130814124/1179415.pdfIn PDF document text
    • http://mapunun.alaskacteplan.com/uploads/1/3/0/7/130775853/xegabu_fotavasizofalo_vukibovumitiga.pdfIn PDF document text
    • http://files.shinermotorsales.com/uploads/1/3/2/6/132695818/mijudimilawe.pdfIn PDF document text
    • http://files.thehollywoodbuilding.com/uploads/1/3/0/7/130775286/paganikekanu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f83764dd-08c6-40b1-95b1-38bdcdfd4a45/55988843996.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd303f63-9063-43bc-a3be-a08358ae47c3/72361360504.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8585c4e7-ad03-472e-a3b8-eb4fcff74a8c/43356268748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d27913b-bf36-47aa-87ad-10a76c3e432b/tafutatoziworizifiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/0927/1702/files/primal_savagery_5e_wikidot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7621/4944/files/gyromatic_micro_adjustor_vanilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/0551/7213/files/botw_map_size_km.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/fozudoli.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_off00005fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBE 5660 bytes
SHA-256: 3faf9dfe90b219d52610fd534ee517fdd55fd8e6a3e572643736e61580ab30a3
font_01_sfnt_off000072fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72FB 10564 bytes
SHA-256: 20fa589c55d8c0495ac60863d208991636b335ce178372fa52aa76df430f6a3b

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