Malicious PDF — malware analysis report

Static analysis result for SHA-256 02515b8b6b1d1936…

MALICIOUS

PDF

43.8 KB Created: 2020-10-05 01:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 03b33384dc741fa1cb80d83baa15b7a4 SHA-1: 64782b0b43055203f245eef63e13aac3cb18408d SHA-256: 02515b8b6b1d19367e118089fa1e4d66a67310ea89601fc9ad6afeb27d5e259c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=gta+san+andreas+helicopter+cheats+pc+full+list In PDF document text
    • https://site-1039409.mozfiles.com/files/1039409/zukimulu.pdfIn PDF document text
    • https://site-1039328.mozfiles.com/files/1039328/kofudabanon.pdfIn PDF document text
    • https://site-1037282.mozfiles.com/files/1037282/xonenonogurenonamarosaviw.pdfIn PDF document text
    • https://site-1039963.mozfiles.com/files/1039963/zafijazudimalif.pdfIn PDF document text
    • https://site-1037088.mozfiles.com/files/1037088/juxujutumekefu.pdfIn PDF document text
    • https://site-1040438.mozfiles.com/files/1040438/lekavulagelugafef.pdfIn PDF document text
    • https://site-1040563.mozfiles.com/files/1040563/32543253746.pdfIn PDF document text
    • https://site-1038790.mozfiles.com/files/1038790/41504244177.pdfIn PDF document text
    • https://site-1036910.mozfiles.com/files/1036910/pilugagezemikijozoromone.pdfIn PDF document text
    • https://site-1042630.mozfiles.com/files/1042630/47740928872.pdfIn PDF document text
    • http://vemajew.entropiatrade.com/uploads/1/3/0/8/130874021/417fd690b.pdfIn PDF document text
    • http://fezikuxa.sdkuykendall.com/uploads/1/3/1/3/131383837/sizaroxizadag.pdfIn PDF document text
    • http://files.authoroliviahowe.com/uploads/1/3/0/7/130739740/zajuvozewines.pdfIn PDF document text
    • http://dokaf.globetrotterscience.com/uploads/1/3/2/3/132303131/xemaxakake.pdfIn PDF document text
    • http://files.kellibehindthescenes.com/uploads/1/3/0/7/130776728/jexamoxez.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/1/0499/1241/4376/files/xezudavefoxikab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0472/2648/6949/files/download_apple_bonjour_for_windows_7_64_bit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8506/9478/files/96771540011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8967/3883/files/tunupalopex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/graphic_designer_cover_letters_examples.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_off00006bd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD9 5272 bytes
SHA-256: 4c44095a8436237a0161d4c33c9ae274b0f367d0f4d50d23209e9733be85bcc0
font_01_sfnt_off00007dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC5 10464 bytes
SHA-256: bb6ac9d11806a53abb8ce643ea9c0e8121c41015863cc5e2a2fcda4abde641a1