Malicious PDF — malware analysis report

Static analysis result for SHA-256 10066f1854458269…

MALICIOUS

PDF

37.4 KB Created: 2020-08-21 00:59:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52369963da2859b2b7cf1d34b0db7e41 SHA-1: 3b114f6dcf5b4e3e4a915834d83fa7c368d2b220 SHA-256: 10066f1854458269c4da9f73024931f62b6549cb6a537b99ada3db39c1ab2850
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. The primary link directs to a known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'Holy bible software for pc free' and the authoring application, suggesting a lure to disguise the malicious intent. The presence of numerous links, including one to a malicious redirector, indicates an attempt to drive traffic to potentially harmful content.

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/pify?keyword=holy+bible+software+for+pc+free
    • http://files.rubatoappassionato.es/uploads/1/3/1/6/131606789/7605191.pdf
    • http://files.vanessaseifert.com/uploads/1/3/2/7/132740339/fovakidigilepe_zejemag.pdf
    • http://files.alzeen.com/uploads/1/3/1/6/131606201/001937.pdf
    • http://nalumakul.800steps.com/uploads/1/3/0/8/130874030/mufajal-gidadufep-nixunizo-dijarefufafi.pdf
    • http://remere.childrenofthepueblo.org/uploads/1/3/1/3/131379230/ronibodilalejuvizipo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1234/1416/files/18299911316.pdf
    • https://cdn.shopify.com/s/files/1/0434/2887/2341/files/834894927.pdf
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/kitusovukesis.pdf
    • https://cdn.shopify.com/s/files/1/0431/6587/6379/files/capital_expenditure_decisions.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/84088541112.pdf
    • https://cdn.shopify.com/s/files/1/0438/8857/4632/files/3_day_eviction_notice_texas_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/2421/0326/files/boom_boom_momoland_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/6368/0929/files/satakol.pdf
    • https://cdn.shopify.com/s/files/1/0434/9765/2376/files/jepiwenagivir.pdf
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/upload_file_using_ajax_without_formdata.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/dictionary_of_forensic_science.pdf
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/composition_of_functions_worksheet_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0438/1900/8160/files/29740427217.pdf
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/97977989378.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005283.bin
3fd4156cae8c2c48949dc7924eac9417acdad2fd25710713111f02925109bb46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5283 5304 bytes
font_01_sfnt_off000064aa.bin
8dd2e1bcbc6d5744d0776200679f8d1cb49ec9b21f4154c889dc2f40e8ba8c42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AA 10548 bytes

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