Malicious PDF — malware analysis report

Static analysis result for SHA-256 e03ac40b1ba4bdde…

MALICIOUS

PDF

36.8 KB Created: 2020-10-06 10:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9f6b06411676a5a335c46c6c409b8f63 SHA-1: 065db823b7a08bffbe72c45f2bbd0047fdfda046 SHA-256: e03ac40b1ba4bdde95b5a030ffbd2f9347f29cb938f20a51d12b71812eaac4d9
94 Risk Score

Malware Insights

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

The PDF contains a direct link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the malicious redirector strongly suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://cctraff.ru/strik?keyword=sexuele+voorlichting+1991+english+su In PDF document text
    • http://dadamuve.moonlitdreamspublications.com/uploads/1/3/1/4/131453832/ziribabi-todoxi-pufosiletolufid.pdfIn PDF document text
    • http://nipejixej.hughesendo.com/uploads/1/3/1/3/131384013/7061684.pdfIn PDF document text
    • http://files.rockthistownproductions.com/uploads/1/3/1/6/131637325/a6b63036e6f.pdfIn PDF document text
    • https://site-1040374.mozfiles.com/files/1040374/72937926142.pdfIn 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/1/0497/7128/2586/files/out_of_the_crisis_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3224/7445/files/lifetime_fitness_beachwood_jobs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6147/6509/files/ar_15_ejection_port_cover_replacement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2480/0673/files/czech_last_names_starting_with_b.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/4945/1161/files/neopets_cliffhanger_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2452/3159/files/7410906153.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000432b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x432B 5292 bytes
SHA-256: 5e472b238ca6c2e2dabfd6dda899548f04a40938f786ca826b6f7358412ccbf3
font_01_sfnt_off0000552f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x552F 4064 bytes
SHA-256: 2b2615e7c3a8bf4b376519036e3e6e31dd10dfbc3e0953eefeab67415e599382
font_02_sfnt_off000063c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C3 9992 bytes
SHA-256: 12fa0dd00d4f4448d7b70dbc0a73dec58145bf791fbfef430492b40c5fc5150f