Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9a889d87fcffea…

MALICIOUS

PDF

50.8 KB Created: 2020-10-14 09:45:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1144e660e2e04e592963e9954451a500 SHA-1: efc118d3cdc786bba51adbee74a7e30916eaca62 SHA-256: 5e9a889d87fcffead811a6e1fe3212c1d4a058817c94c614fc93ecd56ea5fad2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to a link farm designed to manipulate search engine results. One prominent URL, https://cctraff.ru/strik?keyword=lista+de+herramientas+manuales+de+mecanica+automotriz, is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is part of a phishing or SEO poisoning campaign.

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://cctraff.ru/strik?keyword=lista+de+herramientas+manuales+de+mecanica+automotriz In PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/3794757.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7304884.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/6069273.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/tebavu_mofevuz_punoxibera_gijipomole.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/6ccf11d1-587b-4cc4-81e9-fb585aafb699/44131364768.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87befc1f-1a71-4942-a35d-7a853359c1ec/pupakesigosarajexiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d650b5-f5f7-4441-a1b6-c371c473a0e4/93782575667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1ee4ca9-fd93-4f29-a7a6-efab7ed1d894/sogurubegofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a638daa-457f-4acd-8783-175c471eed4c/74728127390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6605/1748/files/leberidumelolunumazew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4410/0506/files/juegos_de_babosas_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3173/9033/files/vimajedoduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3016/9768/files/spiderman_homecoming_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/6821/2646/files/4696988806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7698/3218/files/descargar_geometry_dash_2.2_apk_hack_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2430/9160/files/the_hiding_place_chapter_1_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/ap_physics_waves_practice_problems.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_off00007a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6F 5168 bytes
SHA-256: 294ebd4f00e8606cb5b92dd3c0180782d565b601a6eed4032834859a194e326a
font_01_sfnt_off00008bd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD0 2048 bytes
SHA-256: 7d1d8f4167c36277c8fe71225fbdc31aaaca98204796b18c2f8b3e083a802a80
font_02_sfnt_off000094af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94AF 12048 bytes
SHA-256: 66965bb1891d6defb53d941a5ee46cd77b01adf6777f2e16a8dc906989ddd4c2

Open this report in the interactive analyzer, or submit your own file for analysis.