Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6247a640d3970c1…

MALICIOUS

PDF

66.8 KB Created: 2021-02-20 16:48:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5c8e9ee757635f9dbf0497a034b450a1 SHA-1: a696d0802e0b77062b4ba1423e27eabf4a7d897e SHA-256: b6247a640d3970c184df0da6f1d58d49f53bce3f18c3a145a8df84eb4c409022
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=highlighted+comment+mean In PDF document text
    • http://malespw.xyz/base64_format_javaozwsh.pdfIn PDF document text
    • http://support-copyrighthelpservice-about.com/66126950052rl7kg.pdfIn PDF document text
    • https://cdn.sqhk.co/rejiwosujupa/31ateLm/rurimir.pdfIn PDF document text
    • https://dezijetide.weebly.com/uploads/1/3/4/8/134864221/rorabemosujisawememu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452382/normal_60016e7687d1b.pdfIn PDF document text
    • https://cdn.sqhk.co/nutanujel/fgghfqS/jixibixotasalitidu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498978/normal_6003c774c0efb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485587/normal_600eae6059463.pdfIn PDF document text
    • http://purpless.vip/wondershare_filmora_birthday_template954og.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/ynicggD/stunt_bike_racing_3d_mod_apk.pdfIn PDF document text
    • http://nagesebaz.iblogger.org/mukepoguzej.pdfIn PDF document text
    • http://shop-kid-toys.online/griefprevention_commands_sponge4ivsa.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/ejjhehd/dojonubabati.pdfIn PDF document text
    • http://wufelemu.22web.org/nesaw.pdfIn PDF document text
    • https://sabitafev.weebly.com/uploads/1/3/4/3/134308069/xutus_lijofukidonul_ruxowogugidiga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rimejaje.epizy.com/gobakiriwesijija.pdfIn PDF document text
    • http://dobuwawag.rf.gd/aeneid_book_ii_literal_translation.pdfIn PDF document text
    • http://suxuxuned.epizy.com/badlapur_full_hd_movie_300mb.pdfIn PDF document text
    • http://tanasebebibe.epizy.com/kicker_pt250_10_subwoofer.pdfIn PDF document text
    • http://sirowozikuko.epizy.com/manifest_destiny_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_off0000cc35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC35 5040 bytes
SHA-256: 4a79df430cace70676aa3da219fa1c5e4bbecf9e5c36d1be8d9358a573efaf16
font_01_sfnt_off0000dd2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2F 9664 bytes
SHA-256: 4e3aa0f57f30ff591136919016bba741f6d52164aaefa0df92bdd65fa52f4abd

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