Malicious PDF — malware analysis report

Static analysis result for SHA-256 262ab5392b519d9c…

MALICIOUS

PDF

46.7 KB Created: 2020-10-16 11:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 9057ff2ce44a56eba0df718ab5aecfbc SHA-1: e1f6cbb4e6eedc53201bda90ed51f7f00f5212cc SHA-256: 262ab5392b519d9c2d8be795eeef625acf232f00fc54712899c02f998b275e99
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=vertical+diet+pdf+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_5f8746bae715a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366384/normal_5f8746464f001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369305/normal_5f8846a1f1bed.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vunud.pdfIn PDF document text
    • https://virataxutepubom.weebly.com/uploads/1/3/0/8/130874282/wovimijope_monunonefovapu_popodafa_zugoz.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/54d357.pdfIn PDF document text
    • https://wuwenivavubujer.weebly.com/uploads/1/3/1/4/131437756/vanusub.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/1429013.pdfIn PDF document text
    • https://nikoxutaju.weebly.com/uploads/1/3/1/3/131378952/6904825.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/luzisovilisav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_5f889438dba54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f88fb5886ce3.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/212244991a56c32.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/xusiduwa.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/sesapilegipe.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/a0cb48.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/vifotatilaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ef55b8c3-4c10-4f3a-bc34-c8c30d7be191/38941183832.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b0876e-ab18-4d93-be32-d35e2c0ea457/53083628332.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/759b1f96-a4f9-457a-a9d5-e585a2a3f79b/18483743192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e18fcbf-cc24-4014-b9c3-42f16716bfa0/sulibuwurivumoperilogupad.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_off00006c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C96 4816 bytes
SHA-256: 3a73b202784ed1f2248745c73f9c8e19f33a61b6aeba05a12f01db3ec18963c8
font_01_sfnt_off00007d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0C 9916 bytes
SHA-256: cdbdb177064931939c30ded173bceaca79ac7916a68f249556bb4dc6acb213bb
font_02_sfnt_off00009eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EFF 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e