Malicious PDF — malware analysis report

Static analysis result for SHA-256 01070f6cd50a21e8…

MALICIOUS

PDF

60.9 KB Created: 2021-01-23 23:52:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 20b6df3e50cb633634275ca9db71d0ee SHA-1: 28293dc501f2e94d3cb87726063c8201cfefd966 SHA-256: 01070f6cd50a21e81715ef07d5ad4bc21766b36cb3b2f62604d8447f9a2e3938
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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.
  • 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=enerpac%20porta%20power%20parts In PDF document text
    • https://nafoxowozuvika.weebly.com/uploads/1/3/1/3/131383754/firapewo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467318/normal_5fffb51d0320b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373297/normal_5fef641783495.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505699/normal_5ffe90ea9db9d.pdfIn PDF document text
    • http://dodemawaj.iblogger.org/cellink_neo_9_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/Yhimbhf/mojijafekime.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wolevovugubim.epizy.com/florida_llc_annual_report_due_date_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/burger_hd_pictures_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/calendar_planner_template_2019.pdfIn PDF document text
    • http://mirepili.epizy.com/73618123099.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/garner_nc_police_department_accident_reports.pdfIn PDF document text
    • http://miwufojo.epizy.com/experiment_25_calorimetry_lab_report_introduction.pdfIn PDF document text
    • http://mibofive.epizy.com/anaconda_linux_link.pdfIn PDF document text
    • http://bikikifuxax.epizy.com/scert_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/gizasadupedebijabulavinu.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_off0000b54d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB54D 4944 bytes
SHA-256: 4ed1d246e8820b598dd510a01560b07a5f979b2ec8e3cd2880a70c97c783d358
font_01_sfnt_off0000c640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC640 9624 bytes
SHA-256: 648ee57fa471d780a3fe6a98a725a9e16462ec57601ce80828b69718e6752c36

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