Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad0eac38e1ff848…

MALICIOUS

PDF

66.0 KB Created: 2021-02-16 00:20:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ce8bb34e6aeb2ed191dfad8f1488c424 SHA-1: ca402b58ecae571aa0266ad5855171606c2219c1 SHA-256: bad0eac38e1ff84872611028cd0cdacdc17459d18fdd30f9c5c66c2cb40c2d86
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://yafferge.ru/wix?keyword=west+chicago+skatepark In PDF document text
    • http://jotipire.iblogger.org/65215950494.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445877/normal_5fe05cd08ffae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470223/normal_5fc701327f034.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461481/normal_6022a86481f1e.pdfIn PDF document text
    • http://penerete.66ghz.com/character_development_in_film.pdfIn PDF document text
    • http://lixakux.22web.org/10949916358.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473971/normal_5ff12fe34080a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414847/normal_6024bc4de9ca4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nodefojabotozij.rf.gd/where_did_they_film_cloud_9.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/schneider_electric_malaysia_catalogue.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/information_technology_meaning_by_oxford_dictionary.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/learn_english_speaking_book.pdfIn PDF document text
    • http://fufinekudag.epizy.com/best_hr_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/vobomilerelusemadifesa.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/lee_lake_hawley_mn_fishing_report.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/module_4_investing_test_answer_key.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_off0000c5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D4 5240 bytes
SHA-256: f5d8fdf88dd783726e6b4c18ba68a8191141992841a22a807bad22adcaebf009
font_01_sfnt_off0000d7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B9 10464 bytes
SHA-256: dace03cf1863623fa5ca552e4cc757a86f36903eee43fcdc3645d5e62a8f4e8e