Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8f5af69b9cfbfd…

MALICIOUS

PDF

77.5 KB Created: 2021-06-05 18:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 685dd62bd8ecbbd7792fda3e5dd3ee26 SHA-1: cfa22d495c824e594a884d3bf7d704dfdb964a8c SHA-256: 6e8f5af69b9cfbfdf4c7e293dbbfbc1b3a4018470b00c9b9d16752ae8448ff3b
184 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier. It contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to be a lure, likely intended to drive traffic to these malicious sites for further exploitation or phishing. No scripts were extracted, but the presence of many links suggests a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://crophysi.ru/123?utm_term=commando+2+trailer+hd+video In PDF document text
    • https://vureduvo.weebly.com/uploads/1/3/4/5/134513064/565b693.pdfIn PDF document text
    • https://zuxobopabure.weebly.com/uploads/1/3/4/3/134344154/03b51e1e3dfca8.pdfIn PDF document text
    • https://zamigemunizi.weebly.com/uploads/1/3/4/3/134347724/3955022.pdfIn PDF document text
    • https://jodawozuwiki.weebly.com/uploads/1/3/1/4/131437728/9176629.pdfIn PDF document text
    • https://wevabubuked.weebly.com/uploads/1/3/4/5/134584052/4996458.pdfIn PDF document text
    • https://nekazadezi.weebly.com/uploads/1/3/4/6/134662300/pepokidotad-neliturapoxifu-kolibeke-tadobil.pdfIn PDF document text
    • https://radotarurejatu.weebly.com/uploads/1/3/1/6/131607565/4181181.pdfIn PDF document text
    • https://wemodolitafuroj.weebly.com/uploads/1/3/6/0/136055174/2308590.pdfIn PDF document text
    • https://moxudula.weebly.com/uploads/1/3/4/8/134884970/ruvodar_namonuvakor_tusirezafokexe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://joraxakegeg.pbworks.com/w/file/fetch/144553809/why_my_logitech_headset_is_not_working.pdfIn PDF document text
    • http://nanefumipopo.pbworks.com/f/how_to_hard_reset_lg_tracfone.pdfIn PDF document text
    • http://zufiwuz.pbworks.com/w/file/fetch/144581520/baixar_bblia_do_pregador_pentecostal.pdfIn PDF document text
    • http://komogabovuwa.pbworks.com/f/melody_harp_sheet_music_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a29b8d2c-b5eb-46b9-9d91-3ef5496a56b8/stanley_300_amp_jump_starter_battery_replacement.pdfIn PDF document text
    • http://natizasex.pbworks.com/w/file/fetch/144579090/exercices_interactions_fondamentales_1ere_s.pdfIn PDF document text
    • http://kivotin.pbworks.com/w/file/fetch/144550983/25979040287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2c081fc-fad8-45ce-b270-27c07c57af59/johnny_depp_don_juan_demarco_full_movie.pdfIn PDF document text
    • http://xojifot.pbworks.com/f/gta_iv_offline_mod_menu_xbox_360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82ed071d-911c-4679-8dc0-a3c412c8f063/tatopuminijeda.pdfIn PDF document text
    • http://gabumur.pbworks.com/w/file/fetch/144507630/67954046759.pdfIn PDF document text
    • http://taxexuwej.pbworks.com/f/xewokitajadob.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_off0000f198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF198 4984 bytes
SHA-256: 8f914bb038a6f6d698970a5a93f03b0504eb8563bc3af24089b2aa8bf05db6c5
font_01_sfnt_off0001025a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025A 11220 bytes
SHA-256: 6283b48b81b781734dad8378c7491384f9c371c22b14ef3ae394166fe7011dd7