Malicious PDF — malware analysis report

Static analysis result for SHA-256 45e5d685f1cb4744…

MALICIOUS

PDF

67.6 KB Created: 2020-12-06 14:13:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6539b534e2524fa37be2e83d313c7330 SHA-1: d68c67c0dfca886d090c594ef8e8bb2af93f01c7 SHA-256: 45e5d685f1cb4744002f0d52f21f32c0e3ead798ce73e9c97a5110aac91b533e
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one heuristic specifically identifying a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of numerous links suggests an attempt to lure users to external, potentially malicious, sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/aws?utm_term=expectation+to+the+company+best+answer In PDF document text
    • https://gavawujag.weebly.com/uploads/1/3/4/3/134370084/vodavupezoriwiwa.pdfIn PDF document text
    • https://pexulowiseguwuz.weebly.com/uploads/1/3/4/3/134391342/81f3f899217.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476302/normal_5faa3de0eea49.pdfIn PDF document text
    • https://munuvatatopa.weebly.com/uploads/1/3/4/6/134686277/c1f0a1893f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373264/normal_5f8cc1213077c.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/8e023626-e17b-4b0e-a5c0-572104b20cd1/le_breviaire_tchala_loterie.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe339deaf37e3b64664f2b/1606300576024/felkin_ahn_model.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38244d16-046c-4c6d-a82c-25f1c5faf217/camp_la_llanada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1211b50-ba89-4bb8-b0bd-b8b43da5c623/con_mis_manos_levantadas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98bfd6c6-769e-4b69-a600-3c336713dcdb/download_directx_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e5fa313-208c-41fd-acf6-53bac441a2c2/what_are_the_most_important_parts_of_the_body.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc37bd13dfdd95b60e57127/t/5fc44f18a97599144e81b05b/1606700824813/alone_together_full_movie_free_download_lizquen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cd8052e-b02f-49cb-85ff-fafacb10af10/license_file_for_avast_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2b246df132613bbc941e4/t/5fc3fb8b6457125654b707ba/1606679435908/new_life_festival_eso_quests.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64b5b8ef7301f8b35b94f/t/5fcb7336551bdc47e7a87602/1607168823619/tujesadozolig.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cbc7c6d964583621a279/t/5fccbbc29aa2de0c64903a16/1607252930959/pickaxe_of_earth_and_song.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_off0000cd96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD96 5500 bytes
SHA-256: 4a6bbda5abdf7b702b140cd0ce1aeecea5db81ad840cc2639038cc27455999ab
font_01_sfnt_off0000e039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE039 9592 bytes
SHA-256: 3ab980cb9ec23c0d518710aee9d7d3473e4a9043abd8afda768cf7f217c62987

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