Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d3f6054bc14f67c…

MALICIOUS

PDF

70.9 KB Created: 2021-02-15 13:18:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5e587fa0ceb9cf4079099baf1711e1af SHA-1: 2024b7884498643d54467748053bd42799dcfa2a SHA-256: 4d3f6054bc14f67c7de65d6c002acfd7372e430d6e53755e66c196b4190332eb
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wix?keyword=central+tendency+worksheets+7th+grade PDF link annotation
    • http://smartcreditus.info/607361637197q8q5.pdfIn PDF document text
    • https://wapojopaboxijok.weebly.com/uploads/1/3/4/7/134747084/f6fbae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480423/normal_5fcb51fc6b359.pdfIn PDF document text
    • https://juputifewusa.weebly.com/uploads/1/3/4/4/134435955/nidotokaxobujoxar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495855/normal_5fcb23b07ad22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371020/normal_5fe3eaa4348a3.pdfIn PDF document text
    • http://lnstagram-verificationbadgeform.com/262300164617tyex.pdfIn PDF document text
    • https://forugizatufuru.weebly.com/uploads/1/3/1/4/131410167/178a118f6ef44.pdfIn PDF document text
    • https://voruvagozi.weebly.com/uploads/1/3/4/7/134742827/tazevizi_dutofig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385014/normal_5fdd930383f9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393180/normal_601e1276ee7f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450353/normal_5ff9a960ca7ea.pdfIn PDF document text
    • http://help-service-support.com/supatupebulizokarijowinotrq1we.pdfIn PDF document text
    • http://kmplitka.shop/rainbow_six_siege_unlock_all_operatorsmc9yc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417422/normal_5feb0d66b8da6.pdfIn PDF document text
    • https://tonuvufew.weebly.com/uploads/1/3/1/4/131438708/kinivetofaxu_fuzolezotitur_bagomaw_sakerifoguj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465133/normal_6010c73c5270e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460450/normal_60043ed9bfba8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385011/normal_600e5327c7df4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378619/normal_601a2c83b1975.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE3 5300 bytes
SHA-256: dc32e2f7b71d793721027d04105c00d045dc29f875a8d4fc80c9b9499e701c45
font_01_sfnt_off0000de00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE00 10060 bytes
SHA-256: cf901b57eb86137cce5ae10584d109ad57e0891175ade6691f60d4b5b211c136
font_02_sfnt_off0001006c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1006C 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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