Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9b755ef319aff11…

MALICIOUS

PDF

71.5 KB Created: 2021-02-25 14:05:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 1672fac9fc716589cfd6410a0be97850 SHA-1: 09a461081c5a11ca8fccedd20be1331162ec4261 SHA-256: e9b755ef319aff1114c1eb4f4a06ea5aa37ba0c04be0711ebb4d6030e9d4e2f9
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/wb?keyword=sao%20alicization%20sword%20and%20fist PDF link annotation
    • http://ecoservice-vlad.ru/bsc_1st_year_inorganic_chemistry_notes1pak3.pdfIn PDF document text
    • http://fuckfrsky.com/i_m_not_touching_you_commercial_sunny_dc1213.pdfIn PDF document text
    • http://sanasesuj.iblogger.org/gipoxokenemura.pdfIn PDF document text
    • https://lefagetali.weebly.com/uploads/1/3/2/3/132302894/balixatel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447267/normal_6018aed7f2c09.pdfIn PDF document text
    • http://erogan-oficial.site/todo_list_microsoft_wordw6sth.pdfIn PDF document text
    • http://givavipuj.iblogger.org/wevarumozenizug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://figapow.epizy.com/babul_pyare_bhojpuri_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/voperabexevofip.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/linking_verbs_worksheets_for_grade_1.pdfIn PDF document text
    • http://daxarugusawo.epizy.com/samsung_j2_grand_prime_pro_price_in_bangladesh.pdfIn PDF document text
    • http://fopekexu.epizy.com/little_caesars_pepperoni_pizza_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/lunonamuzumowivaje.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/poserojumipinez.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/81501569060.pdfIn PDF document text
    • http://fobukisa.rf.gd/74707513971.pdfIn PDF document text
    • http://nokezipaxizowox.epizy.com/jixaduvofux.pdfIn PDF document text
    • http://julajibumomas.rf.gd/logic_questions_with_answers_and_explanations_tagalog.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_off0000dbab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAB 5260 bytes
SHA-256: 2be5e9e96086203a522b5e6dcc946eb94b82e95d7e275b9ce5d31c40ea801179
font_01_sfnt_off0000edb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB3 10528 bytes
SHA-256: 403eb7da21b6ff25146087373a7bb94c25a16a4743d1f23db744ea890cefc309