Malicious PDF — malware analysis report

Static analysis result for SHA-256 46fb3e79447eeb86…

MALICIOUS

PDF

72.0 KB Created: 2021-02-09 14:23:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bb7e5e37d5999a5db6a20d0f5cfe4846 SHA-1: 941b476c07ee1d370d608f1c7069fb935e41904c SHA-256: 46fb3e79447eeb86b8f930fb449de434f8898e9af5032144c3d9d043f2dd27a6
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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.
  • 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/wb?keyword=wholesale%20bed%20sheets%20store%20near%20me In PDF document text
    • https://static.s123-cdn-static.com/uploads/4420031/normal_5feb3fb367a81.pdfIn PDF document text
    • https://cdn.sqhk.co/zifuvifiweva/jeKgiib/dimef.pdfIn PDF document text
    • https://dikemogegopur.weebly.com/uploads/1/3/1/4/131406608/a995bd.pdfIn PDF document text
    • http://omynutural.space/engadget_rss_feed_urloh0jj.pdfIn PDF document text
    • https://sinezotuze.weebly.com/uploads/1/3/0/9/130969777/116531.pdfIn PDF document text
    • https://tuverasoxodos.weebly.com/uploads/1/3/4/7/134745130/zovoneluwa_dubewozirav_gilej_kopedipep.pdfIn PDF document text
    • http://badgesverified.com/38353539477pb5et.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_6014aafb30870.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496586/normal_5ffb05a320824.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458389/normal_5fdc5f7381258.pdfIn PDF document text
    • https://malotote.weebly.com/uploads/1/3/4/8/134872882/35e4be.pdfIn PDF document text
    • https://punelita.weebly.com/uploads/1/3/4/6/134679726/kibadigijigasot-juzisaw.pdfIn PDF document text
    • https://cdn.sqhk.co/lanuniwa/Dghwjf2/beautiful_widgets_pro_v5._7._8.pdfIn PDF document text
    • http://giocodigital.space/the_three_little_pigs_disneyx5eqo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://saxogif.epizy.com/fapanemage.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_off0000de3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3D 5220 bytes
SHA-256: e7d858c309832ae4633c5c4a0c5e4fee89f6cf9760c8dc66f280e52154a34727
font_01_sfnt_off0000efd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD3 10348 bytes
SHA-256: 5dde73c3210b95b506bbef5a8ad1c7a244412e84e1f93ed2d59ee4becfc8f506

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