Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8fd6a4638bc670…

MALICIOUS

PDF

65.0 KB Created: 2021-02-17 09:46:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4bfaca4944d4703bdc3c9e2bf6e8d343 SHA-1: d665e7a20bd39fc90377055a5dbdb7e1db93aeb4 SHA-256: 6e8fd6a4638bc670b32b4650e0439dd4d915a01eb1b1bcdbf2e3ee12ad0100ba
136 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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baarspo.ru/wix?keyword=texas+go+math+grade+6+answer+key PDF link annotation
    • http://cloudplay.xyz/echo_srm_225_starting_procedurea5m87.pdfIn PDF document text
    • http://metalllift.ru/dilerixesisouyaih.pdfIn PDF document text
    • http://znatural.space/21981210768i6v34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378836/normal_5fe9308f0c24b.pdfIn PDF document text
    • http://vegekezivujid.22web.org/75056791685.pdfIn PDF document text
    • http://wirodapupoz.iblogger.org/timeform_weight-_for-_age_scale.pdfIn PDF document text
    • http://xefakuwejufo.iblogger.org/75361013573.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/pewomakat.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/maven_checkstyle_report_configuration.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/kilelisalepodofekikodomi.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/example_of_report_text_singkat.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/bandicam_mobile_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/53046614549.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/vigegepojobobosopid.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_off0000c205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC205 5636 bytes
SHA-256: 3cfe920a6b06c5b42cd5a74002986b9393e42332c368b886e1724ff2b5d6254a
font_01_sfnt_off0000d527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD527 10048 bytes
SHA-256: c131a1a884a895cb263927335d6d851013b5a5a6126f4ebe5fb09fe40655b71c