Malicious PDF — malware analysis report

Static analysis result for SHA-256 d86b46003e4cfc3a…

MALICIOUS

PDF

89.0 KB Created: 2021-02-10 12:41:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 098df2b4a0fd9426982f4e1824b99baf SHA-1: 3ad624e72fadd0a802cbe280d51b157a79fc80eb SHA-256: d86b46003e4cfc3a5c6acd24ab1021581648aaadc46ae7bce06179d90a1350a3
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/123?utm_term=non+destructive+testing In PDF document text
    • http://nuweselomarovir.22web.org/ginabopigotuna.pdfIn PDF document text
    • http://9gusevshop.space/campus_area_network_information0hixm.pdfIn PDF document text
    • http://matrixbicycles.com/bombay_house_near_mesl2hh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zamutuxagen.epizy.com/bukunmi_oluwashina_love_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/chakkaramuthu_malayalam_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/nalikafo.pdfIn PDF document text
    • http://moraruvotu.epizy.com/kapijamafomux.pdfIn PDF document text
    • http://rikulovesemura.rf.gd/axminster_bs350_bandsaw_manual.pdfIn PDF document text
    • http://relumewamamit.rf.gd/a4_brochure_template_ai.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/inquirer_and_mirror_court_report.pdfIn PDF document text
    • http://surewefuwiba.rf.gd/rrb_alp_answer_key_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/ease_of_doing_business_pakistan_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/beats_music_brand_guidelines.pdfIn PDF document text
    • http://dopatujijidami.epizy.com/dup_program_template.pdfIn PDF document text
    • http://pibufesoxol.epizy.com/kejopimavuledaneme.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_off00011f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F8F 4896 bytes
SHA-256: 548167b8046ae9550207c1c9d7ed1c959e7f1c9928de5a62f691388f3edff892
font_01_sfnt_off00013058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13058 11984 bytes
SHA-256: 525de768b6035d09c456161d05a4a16acf183f17a1dc87b23286532731d6f0a1