Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c2961fffc0af1d…

MALICIOUS

PDF

48.9 KB Created: 2020-10-15 04:22:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b20c5047724a56178d49d699da2e45a2 SHA-1: 9032813ed7b441aa7f740d1d5710cb7f9ee70b01 SHA-256: c3c2961fffc0af1d623d4e572df7b165b2f4057de118392e23d7547bb97e5c4f
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://gettraff.ru/123?keyword=tally+notes+pdf+free+download In PDF document text
    • https://site-1043689.mozfiles.com/files/1043689/sedobujevidolisutisa.pdfIn PDF document text
    • https://site-1038944.mozfiles.com/files/1038944/91938526003.pdfIn PDF document text
    • https://site-1042941.mozfiles.com/files/1042941/84154452243.pdfIn PDF document text
    • https://site-1043837.mozfiles.com/files/1043837/30048594217.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5f87657a850ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f87748b15058.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367271/normal_5f878eb43f581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f870d0459ae1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f8784df664c8.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/tedinoruline-luwukane-fidigu-xivukavikabikiv.pdfIn PDF document text
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/9996348.pdfIn PDF document text
    • https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/dibaxona_pokedukufufi_zafufed.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/tuberokaxe.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/8d113dbc76e.pdfIn PDF document text
    • https://site-1037868.mozfiles.com/files/1037868/18630191369.pdfIn PDF document text
    • https://site-1048194.mozfiles.com/files/1048194/pengadilan_hubungan_industrial.pdfIn PDF document text
    • https://site-1038999.mozfiles.com/files/1038999/zutiremutisimadoron.pdfIn PDF document text
    • https://site-1037214.mozfiles.com/files/1037214/xadifugirapixazifurodo.pdfIn PDF document text
    • https://site-1038992.mozfiles.com/files/1038992/xumiwibojedoritoko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8247dcb-8cca-43e7-9a9c-d5b53086340d/95658964430.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc456ea0-31ef-46ce-926a-2ee7710beffc/55142390586.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5772 5176 bytes
SHA-256: 6b16ee1abc8869092d9b7b01358c26762758bab7c88c168f562e04085db8c5e8
font_01_sfnt_off00006934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6934 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off00007497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7497 10216 bytes
SHA-256: f0751bc7f920f37252151c6be3643751fa0a74d5906cc27e4c70bf9cdca9bb03
font_03_sfnt_off0000977f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977F 9360 bytes
SHA-256: 622141296cace5031dafa04d9f62ad1df7fcb3dc68f6b91794a5117996d94ef1