Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4fa9cea7e491269…

MALICIOUS

PDF

47.9 KB Created: 2020-09-30 07:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a39265e609b606a9e0ff1500e375deaf SHA-1: ef72220d3e3806b60e342dbdcc0f4b23dc68dd1c SHA-256: e4fa9cea7e491269d8c3a047555136106e56fbca29548c3e51ab109bb9b23876
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/strik?keyword=jspdf+overflow+line+break In PDF document text
    • http://ribep.stevelyman.net/uploads/1/3/2/3/132302894/wotor.pdfIn PDF document text
    • http://vetagafa.mixkitchenfitness.com/uploads/1/3/0/7/130776407/c096ab0b.pdfIn PDF document text
    • http://files.artisticsynergy.org/uploads/1/3/1/4/131453464/f81d494.pdfIn PDF document text
    • http://files.waytogrowpreschool.org/uploads/1/3/1/4/131437491/cc18d58.pdfIn PDF document text
    • http://files.tcbfoodprocessing.com/uploads/1/3/1/3/131383476/490641.pdfIn PDF document text
    • http://files.2eviecreative.org/uploads/1/3/2/7/132740501/depevopumu_senalijumobu_volarax_rajixin.pdfIn PDF document text
    • http://files.mpowertheworld.net/uploads/1/3/2/7/132740415/kadisetiwebuget_rofajanagojata.pdfIn PDF document text
    • http://files.ophsclassof1999.com/uploads/1/3/0/8/130814682/fojukekim.pdfIn PDF document text
    • http://files.makingmathmagic.net/uploads/1/3/0/7/130775506/xidaxabiku.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/cb043b1b-480f-4b96-b13d-3a5e0a3f47a4/65066092905.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b590f6f0-fe92-44eb-8b62-c71644e63547/19617904858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e42251b-ab3d-4219-aced-90bc47ddd1aa/dabigedizu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fe9ca50-f992-48f4-bb1d-936f61c1115b/tevedawakoguduribagef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aab380c6-efc4-414e-a2d5-51093bdfff3d/najoxegagijelujetipotine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82a93b73-f187-40b3-ae7a-497135947ad0/78302502653.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7c17295-b27d-4b0d-bce3-c058793a2f5b/xivunumazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76656117-dd39-4183-92d5-f018417e2acb/60778759974.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/692bc368-4bb5-42a4-91cb-17a74e9182c2/17287742638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/290aaee4-baba-49ee-9557-d7bd02bfe168/dubinagozagumalujixamumaj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AA 5088 bytes
SHA-256: 34a9538272d90270555fab0f369040e321e2d29c18c30ab446e48b9fbe206dcf
font_01_sfnt_off0000750d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x750D 15072 bytes
SHA-256: 0c9a071ff07e088bb601f3410fc7ca5bd6b57d70d0e484cbb0ee40e5bd938347
font_02_sfnt_off0000a4b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B8 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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