Malicious PDF — malware analysis report

Static analysis result for SHA-256 101d68bc4c020d5e…

MALICIOUS

PDF

65.5 KB Created: 2021-02-14 05:52:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 09cee1b4f4d3baea48f764a1ac03e4d2 SHA-1: dec67f722e1255e1a53b86250fedae9bffee7785 SHA-256: 101d68bc4c020d5edb6a7c82c9ca741867bf3aa9419db451a514d2f4c0ba9ca3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=cell+theory+timeline+worksheet+answer+key PDF link annotation
    • http://osmosiotzs.fun/43160906131xpo0g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420250/normal_5fcda922b7a99.pdfIn PDF document text
    • http://instasurprise.online/pipekibupelobimojoragivus2f4co.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480895/normal_5fe50a9197ad0.pdfIn PDF document text
    • http://fogarapisow.22web.org/astable_and_monostable_multivibrator.pdfIn PDF document text
    • http://lbaranaydin.com/8904542568017w76.pdfIn PDF document text
    • http://pomurofame.iblogger.org/kozuderebibufefirem.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/learn_english_grammar_online7x3na.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484639/normal_5fd32a7dd2caa.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/lanaladu/dufepejob.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/fodapuvanodafurereriniwud.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/90912036499.pdfIn PDF document text
    • http://verejixufitoge.rf.gd/vareparopitoviji.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/macbeth_graphic_novel.pdfIn PDF document text
    • http://newewixojarulup.epizy.com/elastomeric_bearing.pdfIn PDF document text
    • http://vodomuvukowoz.epizy.com/11771670408.pdfIn PDF document text
    • http://koxunum.epizy.com/936113460.pdfIn PDF document text
    • http://fobunedofakane.rf.gd/blender_dope_sheet_animation.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_off0000c66a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC66A 5088 bytes
SHA-256: 02c3a95bd807950d94e3204dc98a7549c06fc6f33ca6c8fbe2e956e40b30a54a
font_01_sfnt_off0000d796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD796 9684 bytes
SHA-256: bf5def805ea47a4df040f27b65284c6dababc7ee2926ddb7dbfa3ca7bc29de80