Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f0d0b021c2042ba…

MALICIOUS

PDF

80.6 KB Created: 2021-03-05 00:01:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 60012512ea76938353397c0d9846849d SHA-1: a295d1a35c4ccd46af2cc62ee07d4a4d6f6a06c7 SHA-256: 2f0d0b021c2042bad2572afc19b4f895e56de581bf72671873769de2a2bb2829
184 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to malicious redirector infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains text that appears to be a lure related to a movie title. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=childhood%2527s+end+movie+1997 In PDF document text
    • http://jipegogujozu.22web.org/name_a_worksheet_in_excel_vba.pdfIn PDF document text
    • http://dusosax.66ghz.com/topivilujuxumekaditomoraf.pdfIn PDF document text
    • http://jipuvojenibomig.22web.org/65472610241.pdfIn PDF document text
    • http://voduvalegef.66ghz.com/how_to_unmute_ringer_on_vtech_cordless_phone.pdfIn PDF document text
    • http://rufisurerupu.iblogger.org/what_are_the_three_genres_of_literature.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://44879a12-c10a-431c-a98a-7de142752d0f.filesusr.com/ugd/bb4607_c778c14b716142f6b77f00f5f0c7e40c.pdf?index=trueIn PDF document text
    • https://68f2566a-c586-4d15-a5d1-3a72044c38f3.filesusr.com/ugd/ecec20_d3cc2c9846e844fe84a86ddae7914cd6.pdf?index=trueIn PDF document text
    • http://luloxefisamo.rf.gd/kufagosifokulofe.pdfIn PDF document text
    • https://ac734925-007a-49fa-9a6b-2340142042ec.filesusr.com/ugd/ea78e0_9504e0efbd5a419eb8fcef7401774284.pdf?index=trueIn PDF document text
    • http://mudefikireneb.rf.gd/inference_worksheets_grade_5.pdfIn PDF document text
    • http://pinamagowejut.epizy.com/evermotion_archinteriors_vol_32_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea1146e3-5274-42fb-9cde-de058904a71d/my_daily_choice_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e873307b-7685-4c31-8112-81272b4e0ea7/mimusirobasegaj.pdfIn PDF document text
    • http://pemudabapixowu.epizy.com/acgih_tlv_2016.pdfIn PDF document text
    • http://zuvojiveko.rf.gd/jujifokofidewezunadeju.pdfIn PDF document text
    • http://bozetuv.rf.gd/gefavazudo.pdfIn PDF document text
    • http://gimokoso.epizy.com/earned_it_the_weeknd_piano_sheet_music.pdfIn PDF document text
    • https://c245485c-e1a4-4c5a-9a2a-c465a95e53c8.filesusr.com/ugd/25f824_a104ba0fe78441b186aa488e25526a86.pdf?index=trueIn PDF document text
    • http://vawovujuju.rf.gd/metformin_dosage_for_fibromyalgia.pdfIn PDF document text
    • http://wopapaxepesibad.epizy.com/blue_card_application_form_volunteer_to_paid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00bb9088-6f6e-4e78-b9f4-4a59aa162901/votam.pdfIn PDF document text
    • http://sasibimedijit.rf.gd/how_to_replace_ink_cartridge_canon_mx922.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_off0000ff33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF33 5044 bytes
SHA-256: 18734301228a6fefcd2f024e6bd907a42ca193bd7b43206f389cc5e6becba2ff
font_01_sfnt_off0001104b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1104B 10796 bytes
SHA-256: 686f7d9571bf7575b9821b56f31e23ebb30bf3f706cf2a4900aca44229a4ce47

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