Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f352b263e89bfe…

MALICIOUS

PDF

77.6 KB Created: 2021-04-16 20:20:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d54a3b6ac5329cc91836dfa9015b2e5e SHA-1: 58caeb9adb4874b32822607b8be6cd591bc5efd2 SHA-256: 89f352b263e89bfe454a18556f76c1143bbc9b1f0c12fad2f27c66510ba59e20
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://soxebez.ru/strik?utm_term=scag+freedom+z+52+kawasaki+price PDF link annotation
    • https://xetasigebe.weebly.com/uploads/1/3/4/4/134443645/fe2cbcd.pdfIn PDF document text
    • http://everydays.space/air_force_academy_falcons_football_score880dr.pdfIn PDF document text
    • http://gallery-shop.site/595519297315c0et.pdfIn PDF document text
    • http://zzzmmmmejjj.space/splat_hair_dye_color_timing_chart7n56f.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://remontlegko.info/breeam_uk_new_construction_2018_technical_manualn6sbx.pdfIn PDF document text
    • http://whysmall.space/lista_de_verbos_en_presente_simple_en_ingles_ejemploslmfnj.pdfIn PDF document text
    • https://ziposubiv.weebly.com/uploads/1/3/0/9/130969570/7991648.pdfIn PDF document text
    • http://prodson.space/top_50_nursery_rhymesdc1mm.pdfIn PDF document text
    • http://seropuxaxogel.22web.org/types_of_irish_traditional_music.pdfIn PDF document text
    • https://joripulugafu.weebly.com/uploads/1/3/4/3/134318872/6d19e1629b024e.pdfIn PDF document text
    • http://topsale.pro/merriam-websters_vocabulary_builder_free_ebook_download3smt8.pdfIn PDF document text
    • http://reform-st.ru/what_brand_of_boots_does_the_army_userbp6o.pdfIn PDF document text
    • http://lesantyqas.online/xijuvamoremovizowok3hkgc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xomupap.rf.gd/wonurupejumiwosobikib.pdfIn PDF document text
    • http://nudifezidezi.rf.gd/vurunefizebaruwowigivez.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/81568822399.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/cima_p1_study_text_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba38eec0-827f-4c23-85e3-1aa1884a4124/how_do_you_set_an_indoor_light_timer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcb7cab3-89e1-49b3-a9b4-4e287955bc61/fapogenamusexurupipuvul.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/risup.pdfIn PDF document text
    • http://vemevusakeke.epizy.com/expense_format_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/52973388870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/625f49d9-7d26-4ec8-a5aa-dd49a011927b/how_to_adjust_door_on_refrigerator.pdfIn PDF document text
    • http://mapexas.epizy.com/42155775387.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_off0000edb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB4 6008 bytes
SHA-256: 469789e77b4868639d7068dbc7dfa2cc6f10e410f28563d7efea654ebabbe902
font_01_sfnt_off0001023e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023E 11376 bytes
SHA-256: 3d5a26a86ce9ea188f91ff590b7d72eeb0712844841171eef0d30454aeec0cec