Malicious PDF — malware analysis report

Static analysis result for SHA-256 b89662353c1ed9fb…

MALICIOUS

PDF

64.5 KB Created: 2021-02-17 04:06:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 04c3d155a539b04e4e825f1ca556dee5 SHA-1: 7b0bc84387d0f30b05ed4404cf1e7b3fe24a90e4 SHA-256: b89662353c1ed9fb57a6ab2326418ee994b8a78352dc85cd981d19af26b2c716
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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/strik?utm_term=hoover+windtunnel+pro+vacuum+manual In PDF document text
    • http://blog-millionaire.buzz/sijapaf7e8so.pdfIn PDF document text
    • http://verifiedbadge-lnstagram.com/deterirokadobotokipipunkg7qy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482018/normal_5fd7d6f002092.pdfIn PDF document text
    • http://trixy-matrix.space/xowezekibigiwujuvub7b0hs.pdfIn PDF document text
    • https://kopikemuv.weebly.com/uploads/1/3/0/7/130740389/5928246.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/kovesipibewetubu5gp35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421335/normal_5fcf1379d5d28.pdfIn PDF document text
    • http://itactical.xyz/8065820716863ttm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407795/normal_5ff901f5d4518.pdfIn PDF document text
    • http://vsspb.ru/balenciaga_shoes_cheaprjd3u.pdfIn PDF document text
    • http://sadovik.me/48740438178c9z01.pdfIn PDF document text
    • http://copyright-help-report.com/writing_movie_titles_in_apa_formatk67j6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414488/normal_5fd1e68ed8cde.pdfIn PDF document text
    • http://baffer-shop.space/laser_draw_free_downloadm63wn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ruxevomim.rf.gd/13739224198.pdfIn PDF document text
    • http://kidewidenidoze.rf.gd/how_to_describe_an_old_persons_face.pdfIn PDF document text
    • http://vanomuwoz.epizy.com/gurudajafajide.pdfIn PDF document text
    • http://pavemadimakok.epizy.com/making_inferences_worksheet_5th_grade.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_off0000c08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC08E 5152 bytes
SHA-256: a46822ba8cc3feb1e2333465f7982dd8fd9448637ee942f15f96717b41f39145
font_01_sfnt_off0000d213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD213 10216 bytes
SHA-256: 279065381390beed9fa44b2655d877c55552560bf8e0f86b50320a6b1c4161f8