Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde11390d6b54e3e…

MALICIOUS

PDF

75.5 KB Created: 2021-03-28 04:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 428de0c20790edd7b2094740c468c8f0 SHA-1: 21fadbc11883168b379f0f734fa0f250f2effd44 SHA-256: fde11390d6b54e3ed04cb83ce184e22ca1d0aac33b1390d97f328006750fb734
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains heuristics indicating it's a phishing lure, specifically using an SEO redirector with a keyword related to business plans. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attempt, likely initiated via spearphishing.

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://fokemale.ru/award?keyword=livestock+farming+business+plan+in+nigeria+pdf PDF link annotation
    • https://cdn.sqhk.co/xororofomed/hKigEhF/metronome_beats_pro_download.pdfIn PDF document text
    • http://fejiximodanu.mygamesonline.org/wevubog.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/19410238594.pdfIn PDF document text
    • http://wowogobofomufu.mygamesonline.org/skilsaw_3310_price.pdfIn PDF document text
    • http://vumajuzatijerak.getenjoyment.net/academic_writing_course_rr_jordan.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/82427326076.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/digidozepesibowixano.pdfIn PDF document text
    • http://sumapewub.getenjoyment.net/headway_beginner_final_exam.pdfIn PDF document text
    • http://luxibenuguk.getenjoyment.net/public_administration_course_syllabus.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/Iih2haX/stokke_tripp_trapp_natural_vs_whitewash.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jomopizemiz.onlinewebshop.net/how_can_i_renew_my_food_stamps_online.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/38897953640.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/pulogegisolokafelosejuman.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/37269299173.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/95736582180.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ca79aa6-f3eb-4876-afcc-f63289abc58d/saxunon.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/non_compete_agreement_in_florida_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e02c516c-2ee2-4e08-a210-1e5f19d14a94/how_to_clean_furnace_secondary_heat_exchanger.pdfIn PDF document text
    • http://kojenixerog.myartsonline.com/do_you_still_get_paid_for_leave_of_absence.pdfIn PDF document text
    • http://jawuwibunoropo.atwebpages.com/nusejesolexulofeweso.pdfIn PDF document text
    • http://gudukiderunusu.myartsonline.com/gpc_cetoacidosis_diabetica.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BB 5680 bytes
SHA-256: 8618efee6fb269d4580befb40de9c676668acd3d41c315638a428d59a4aea244
font_01_sfnt_off0000fb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0A 10960 bytes
SHA-256: 390c42d2303f9673c2204418c26af63979d7facf2af738c03aad99dfd98f407c

Open this report in the interactive analyzer, or submit your own file for analysis.