Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea61e8f1c7a7be60…

MALICIOUS

PDF

71.6 KB Created: 2021-03-26 11:03:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 4cd912a573f12b603466d0d4494e5a05 SHA-1: 3e6490a8f1645a8f09faccdb9e7148b64a01eb4a SHA-256: ea61e8f1c7a7be6015d4c4753f53ec05347cfa1f8f273ea9a6be603a20200539
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. One embedded URL, https://maypoin.ru/wix?keyword=gecko+gauge+lowes, is particularly suspicious and likely leads to a phishing or malware distribution site. No scripts were extracted, but the overall structure and URL distribution indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://maypoin.ru/wix?keyword=gecko+gauge+lowes PDF link annotation
    • http://lunatan.medianewsonline.com/61016590590.pdfIn PDF document text
    • https://susuravi.weebly.com/uploads/1/3/1/1/131164319/resigum-bolatorexidarow-kasotonopekusur-tiduxexunow.pdfIn PDF document text
    • http://waferaboteb.mypressonline.com/luribimimibupube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454429/normal_603cccbfd7c48.pdfIn PDF document text
    • https://vikabedegopeve.weebly.com/uploads/1/3/0/8/130874339/4041556.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410020/normal_6037f6242d78d.pdfIn PDF document text
    • https://pitulero.weebly.com/uploads/1/3/2/6/132683003/juwisumunavuwu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369793/normal_6014e5ce2ac92.pdfIn PDF document text
    • http://fawaxifiwuzodil.scienceontheweb.net/77336593548.pdfIn PDF document text
    • http://gezakiribonenin.mywebcommunity.org/arithmetic_operators_in_java.pdfIn PDF document text
    • https://jusatupu.weebly.com/uploads/1/3/4/6/134652681/54514a6e3e0157.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/68b40507-f765-40bf-a85c-c682d9f6341e/program_management_office_charter_example.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/tefowifogojew.pdfIn PDF document text
    • https://31e64076-56b3-4e53-9780-179364fbad2f.filesusr.com/ugd/d8d3cb_4cf234a8d52d47dca7ee5c6c1e5f0358.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kovilowab/34499883305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a75180de-3d7b-4093-889a-1247a82ef33a/what_are_the_five_principles_of_cultural_competence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d366f2d-94dc-48fb-930d-ef227f6f050f/redamaxev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3133a292-e3ed-4233-98ff-a5d294c830ff/what_size_tires_does_a_2016_chevy_malibu_have.pdfIn PDF document text
    • https://e3e1c2aa-7f41-47b0-8c2f-d823cb48b857.filesusr.com/ugd/7598fa_5ed8f3d49a8f4d3d8a04dfeab99ede63.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4246940e-2a6c-40dc-b54c-fa0bfad179ab/dutemujugijumuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/59380877619.pdfIn PDF document text
    • https://b00f38ea-0d13-4519-ab0f-1253f0d03ca0.filesusr.com/ugd/289c5e_8516056bdbf9485d851fad81b08ba5e5.pdf?index=trueIn PDF document text
    • https://fb9345b8-40be-4608-a8ff-9c5427dba92f.filesusr.com/ugd/98d639_9b0fd33952ad471a9c1a2814819def57.pdf?index=trueIn PDF document text
    • https://064d663d-f6b2-44cf-a6ad-083da5f315e5.filesusr.com/ugd/77eba6_116bec07112f4290bfa8c78ccd5fe4e3.pdf?index=trueIn PDF document text
    • http://vilatelisoto.onlinewebshop.net/99123020205.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_off0000da3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3B 5056 bytes
SHA-256: 80ab21edd513a11a39c19b238cee5474c0231b4c68c0a84867e04b8ebfbdbc32
font_01_sfnt_off0000eba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA9 10820 bytes
SHA-256: cc72b2e7fe7b09d477241bce62c968f35c2bd436d8293e1aa7d5ebc2b7b0bef9

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