Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a0989796d7b7f0f…

MALICIOUS

PDF

70.4 KB Created: 2021-03-24 09:16:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1031852a90eeadb96064e7300b2de3e7 SHA-1: 2696d17e5952a7ef70cd6dd121d3969e791b7d1d SHA-256: 9a0989796d7b7f0fe0d5b6682860b9c146055e4df317058eda42c17ea03badfa
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xezojetit.ru/award?keyword=sodium+chloride+merck+msds+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389794/normal_6042b6699eebe.pdfIn PDF document text
    • https://kaxudafesin.weebly.com/uploads/1/3/4/3/134355678/bebirave.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367627/normal_5fe5383c5a8e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_600bbe47ee2ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383160/normal_5fce459e0f210.pdfIn PDF document text
    • https://detitominaxa.weebly.com/uploads/1/3/5/3/135304018/nidavafo.pdfIn PDF document text
    • https://zemonawajut.weebly.com/uploads/1/3/4/6/134688337/zezerimezobaviwotij.pdfIn PDF document text
    • https://koxawikala.weebly.com/uploads/1/3/4/6/134643159/3439083.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/1bae7b1b-dc4c-45e7-a1ab-6bbd68caf6c1/39973288579.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c963f7a5-74c2-4c64-8c4d-dc21cf94a7ff/tidemuruz.pdfIn PDF document text
    • https://e0220c8c-c322-4c33-af83-7c5b0fe00b66.filesusr.com/ugd/a771bd_5e511190aaca45f2b24efd448ae9d736.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/53823e35-485c-4011-862e-92fb9f3b26b2/71461730650.pdfIn PDF document text
    • https://c7bff75e-0a19-4817-9d47-fca4cf08161b.filesusr.com/ugd/3b6424_6b954edc204a4bdfae41be1fe2f17363.pdf?index=trueIn PDF document text
    • https://ff19a39e-637c-4fc6-80cc-750024e8dd37.filesusr.com/ugd/d217e2_43dc933ba8834f049afc37f3971b9893.pdf?index=trueIn PDF document text
    • https://627ea4a7-3f28-4bf3-8c99-6a9da7dacf48.filesusr.com/ugd/1970e2_2d73fc76c33d489eb5cfcb3b722010d7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b82ae47c-1d74-4fe9-8450-2a601cfe5dde/verbos_en_ingles_regulares_e_irregulares_en_presente_pasado_y_participio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f0a4001-a3ed-4b47-b4e6-0f7f66d3db8d/what_does_the_maintenance_required_light_mean_on_a_2003_honda_accord.pdfIn PDF document text
    • https://28546a20-d0cc-4b82-bb4f-6711990cd5a3.filesusr.com/ugd/0bcf16_2a56d645fe4a4d289df5bba458fc19fc.pdf?index=trueIn PDF document text
    • https://4b5f4e46-8b81-4257-bf39-61fc08ba57b0.filesusr.com/ugd/7ea8bb_a5b175fe01f04b299922df61e6489b5e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b22eb808-dcb6-4c32-aad2-43169ba0ec8f/17711374271.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_off0000d52b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD52B 5352 bytes
SHA-256: 00146468b80676cbb7e4fdddc93326b8c532bf73bda052a0348a947af0bcb0e5
font_01_sfnt_off0000e737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE737 10912 bytes
SHA-256: d7f017a76db5c695ccdaa9a49919a598b71a9ee1aa01f0deedeec16f60277e53

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