Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac74ecc00580c5c6…

MALICIOUS

PDF

71.9 KB Created: 2021-02-11 14:22:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 257e9fd8f3166edc11b4f59a6db8729e SHA-1: f6bbe5f8412640fb21da1c4506a85ebe7e09a984 SHA-256: ac74ecc00580c5c6172497b9eac478ded1f812c82d19705446ad3b3a2b117e4f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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 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.
  • 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://bologen.ru/wix?keyword=dragon+ball+z+kai+fight+it+out+lyrics PDF link annotation
    • https://fokutape.weebly.com/uploads/1/3/2/8/132814024/sifuxobebin.pdfIn PDF document text
    • http://nevogixire.22web.org/ant_video_free_er_for_chrome.pdfIn PDF document text
    • https://rinulokol.weebly.com/uploads/1/3/4/8/134868038/3ff99c.pdfIn PDF document text
    • http://cardio-active.site/27119580373hp0sz.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/jcgfNja/free_keto_diet_shopping_list_printable.pdfIn PDF document text
    • https://xidelesa.weebly.com/uploads/1/3/4/4/134498911/4a488e28.pdfIn PDF document text
    • https://febefadu.weebly.com/uploads/1/3/1/4/131453100/wetolitakados-bujisovagu.pdfIn PDF document text
    • http://tobalalupuvobiv.iblogger.org/android_notification_service_permission.pdfIn PDF document text
    • http://smartcreditcheck.info/cabala_e_antroposofia6707a.pdfIn PDF document text
    • http://gemajesubon.22web.org/barcode_font_128_b_free.pdfIn PDF document text
    • https://lifexusubanipi.weebly.com/uploads/1/3/4/3/134377686/kafawozasumaweg.pdfIn PDF document text
    • http://filemarker.store/38626476042appb6.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/bIqbifQ/free_60_s_70_s_music_downloads.pdfIn PDF document text
    • https://rabuwamefikulo.weebly.com/uploads/1/3/1/3/131398373/7777776.pdfIn PDF document text
    • http://ukranews.icu/automobile_repair_booksa7elp.pdfIn PDF document text
    • https://cdn.sqhk.co/sojejinof/iirjcnV/bipomadavono.pdfIn PDF document text
    • https://wenibowefopari.weebly.com/uploads/1/3/0/8/130814001/1c4623f062d.pdfIn PDF document text
    • http://ufenmac.com/58703064374smp55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mavusovemoritev.rf.gd/26055712731.pdfIn PDF document text
    • http://lamerowed.rf.gd/financial_statements_template_xero.pdfIn PDF document text
    • http://pakekaririwofas.rf.gd/xurobigatetulazu.pdfIn PDF document text
    • http://kesobikifa.epizy.com/dark_souls_3_darkmoon_covenant_guide.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_off0000dc6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6D 5500 bytes
SHA-256: 7bd5be41dc0517bdf0cbd37d14bc92b592e4287d0a3f7fefee5dd7569cc53e12
font_01_sfnt_off0000ef37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF37 10104 bytes
SHA-256: e970c41a9e2371b3b113f4cb4b6950b9eae500e6588c5e7fbb43d24044e7066f