Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d85e0c1611b5d6…

MALICIOUS

PDF

45.1 KB Created: 2020-10-15 07:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 213fd4cf178d95c6b5a3f32abd31117f SHA-1: 5a620107a3acb2fd60480836e80cc39dc4c7d809 SHA-256: f6d85e0c1611b5d677bf142dfbd91cf1d47dda1c825b1bd2b6ef109753ca8931
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/123?keyword=image+editor+android+app+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f871014df02d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367275/normal_5f875dd41ec8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f871e2abd548.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_5f87abac8dbaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f86f4da70d28.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/9400458.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/a3ed947.pdfIn PDF document text
    • https://vurofagulomefu.weebly.com/uploads/1/3/1/4/131452840/456e64a.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/b9ae3.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/9173172.pdfIn PDF document text
    • https://site-1048275.mozfiles.com/files/1048275/xukabazezafet.pdfIn PDF document text
    • https://site-1038827.mozfiles.com/files/1038827/ribegowas.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/1/0484/8356/5730/files/48624301487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7750/1079/files/gujolib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/1579/9462/files/fakaratewujuxudipele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9669/7749/files/47779775961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3884/6359/files/92796398408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5418/6146/files/wixojepezexeposexukidi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/940ebdef-f157-419e-83b5-af0461fdeb81/5520220225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f99f4158-a71c-4d3d-8e69-45cf1d2e3365/87205350631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c433e3d-eb16-471f-abc9-81ad1c543ee2/47885664039.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEC 5132 bytes
SHA-256: 0d82576a975b9de0332dc11093d77927b4e062717be93e0b76f5a4f0f38412ab
font_01_sfnt_off00007d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D55 13480 bytes
SHA-256: 5288ad26482ea7c79a7cd4a16136f78efac2d41cb2bab46748a23b86664d69c3

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