Malicious PDF — malware analysis report

Static analysis result for SHA-256 22b057ac33118f8e…

MALICIOUS

PDF

76.0 KB Created: 2021-02-20 15:34:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0e5d53989e38d0360cf0d5a44257dc09 SHA-1: c39586989681e1acd946d2aa2ab13b73c21e427e SHA-256: 22b057ac33118f8ed656efa850313ff18af6dd3e1180a5fc64c7aaa1b054029e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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/aws?utm_term=are+easton+axis+arrows+good In PDF document text
    • http://odebayitrafikhizmeti.com/zinulina84y5u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476420/normal_5ff6a3ca01094.pdfIn PDF document text
    • http://cardio-natural.info/rexemobtr5id.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407303/normal_5fef983d2be42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418991/normal_6000a48e9e444.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452621/normal_5ffa04366c137.pdfIn PDF document text
    • http://brumbum6.xyz/128498311948z06n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_6019cb59aa258.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377379/normal_6000699426ab3.pdfIn PDF document text
    • http://francobusiness.com/nokenedxd6g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420939/normal_5ff247aa3729c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuvixivo.epizy.com/short_division_worksheets_year_5.pdfIn PDF document text
    • http://suzufesa.epizy.com/aikido_hand_techniques.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/apache_tomcat_8_linux.pdfIn PDF document text
    • http://giwolexuki.rf.gd/aws_console_s3.pdfIn PDF document text
    • http://xesidif.epizy.com/game_bubble_breaker_mod_apk.pdfIn PDF document text
    • http://mumudok.epizy.com/leroguzij.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/girlguiding_safe_space_level_2_worksheet.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_off0000eb2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2A 5108 bytes
SHA-256: 3298aa32c6416c62e5a1cdd2605289b6dcb590afd7fc89a4199a6bad06426887
font_01_sfnt_off0000fcb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB0 11240 bytes
SHA-256: 50cb1dcb24ddcc8196c5cf6973814a66ce9c812bfb97b604df4d9ea99933386d

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