Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e6fa17487f2a7fc…

MALICIOUS

PDF

76.9 KB Created: 2021-03-15 05:05:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b97c20a7e0f4b8100777e4b04e9aed7b SHA-1: e6dc96c46faa0251c498dd22dd112a2ead444a70 SHA-256: 6e6fa17487f2a7fcb8cc382cd5df05c5e8789ad8d286365a8c9daae63cb3d9f1
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with several pointing to known malicious redirectors and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure itself facilitates the redirection to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 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://yafferge.ru/123?utm_term=atari+2600+roms+for+android In PDF document text
    • http://zegererevez.medianewsonline.com/natelilivagupif.pdfIn PDF document text
    • http://help-copyrighteamservice.com/26393502148udwez.pdfIn PDF document text
    • http://bigowet.xyz/34264108268bcibf.pdfIn PDF document text
    • http://memowelubi.mygamesonline.org/85060958076.pdfIn PDF document text
    • http://trokot-shtorki.online/dyson_dc50_replacement_cleaner_head22rat.pdfIn PDF document text
    • http://supariwepexafat.mywebcommunity.org/suzimefasoberobojexufurej.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/34633161491.pdfIn PDF document text
    • http://nabavawuzafurur.mygamesonline.org/dogegajupa.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/0fa2ec05-6ab3-4ff7-a362-930848331455/is_photoshop_elements_2020_compatible_with_catalina.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/busy_works_beats_chord_magic_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/victorian_incident_report_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/42104337918.pdfIn PDF document text
    • http://mepitar.atwebpages.com/rca_galileo_pro_11.5_case_walmart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7623c5ff-2e4c-472a-bce4-323f6e6e9305/vorulijokeselamuk.pdfIn PDF document text
    • http://puvapulugo.onlinewebshop.net/church_financial_report_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/teliw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e121401-8517-4f9f-9ad6-d63c29d1a0c5/meade_etx_70at_astro_telescope_with_autostar_hand_controller.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecffd0f1-2ae0-44e2-9b30-effae1f9cd58/easy_french_books_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/55034389057.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d98f22fb-fcf3-4e84-84e5-9a6bbb64059a/lurixisezemebomuraxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab0a1ea5-dd99-44c0-92c2-0f0f338b5f54/how_to_talk_to_lover_at_night.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18417e55-9d63-47b7-bcf7-a3dc84a19553/the_girl_with_the_dragon_tattoo_cast_daniel_craig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc4f6f19-e76e-4ab8-aeff-9b96f4d8a94d/business_vocabulary_in_use_advanced_book.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e50d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50D 5436 bytes
SHA-256: b285ae1fa77867e941b177ce88501b9d18b37cc3889e3d5dc7a482f95b90c405
font_01_sfnt_off0000f76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76F 2236 bytes
SHA-256: c2456c3bac7e5329ce652a5137ac5d7264716f8eb725e1e0179b0f9267bacde9
font_02_sfnt_off0001018a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1018A 10524 bytes
SHA-256: 1f8cba542cebdcfe475720cc7810ce21357271929193cfb0cd65f7655bb48e93