Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb26347423ed01af…

MALICIOUS

PDF

93.9 KB Created: 2021-03-23 12:28:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4c1c9348a0e5c5f1bae7991de8c91e3f SHA-1: 1a1d45e5eb9205637e88978f7cf0ec7c0e043d87 SHA-256: eb26347423ed01af91330e72441215eab90f26d6a1fb1ca66613d6ff5476b54b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://soxebez.ru/123?utm_term=claisen+condensation+reaction+pdf PDF link annotation
    • http://shop-profildoors.ru/line_6_spider_4_amp_reviewov3jw.pdfIn PDF document text
    • http://fakts.design/bike_jumps_to_buymhodu.pdfIn PDF document text
    • http://help-violation.com/31680745418dwxea.pdfIn PDF document text
    • http://picply.ru/praxis_plt_7-12_practice_testg224r.pdfIn PDF document text
    • http://rameautbxy.space/44113387698oeb6x.pdfIn PDF document text
    • http://gabutetidik.22web.org/solving_linear_systems_worksheet.pdfIn PDF document text
    • http://sayfelengs.space/kidizukijef5yyu.pdfIn PDF document text
    • http://nextauto02.ru/what_are_the_qualities_of_a_good_teaching_and_learning_aidjro89.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pifazudiso.rf.gd/hp_deskjet_2546_printing_blank_pages.pdfIn PDF document text
    • http://birotizedu.epizy.com/iso_45001_risk_assessment_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f7cc3ad-f413-4892-ad4e-110f15f1615f/sazaginugedirapegizok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9860c34-ff51-4bda-ab91-336401a43fc7/29215473178.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efea91e6-2365-4bc1-a718-6c7b73c755e8/kijopame.pdfIn PDF document text
    • http://murakuxun.epizy.com/kezedonetixuribazaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43eb2e3f-059e-4bb4-99ec-acbe112eb73c/67998218146.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b2835c2-d526-45b7-9ecd-96546fd14b86/the_book_thief_movie_summary.pdfIn PDF document text
    • http://sojugixu.epizy.com/gpsc_exam_paper_with_answer_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc55bc8b-2fa2-40ee-ba59-315057107d60/how_to_reset_a_linksys_re6500_extender.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cea09a6-afda-4431-b992-392fb11188ba/where_did_the_navajo_code_talkers_come_from.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/430eb758-84d5-4f4f-8376-36d445351a12/how_long_to_cook_chicken_in_baby_george_rotisserie.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011b42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B42 5052 bytes
SHA-256: e1bd61299d516cc6e096b6d389abc8a13bf8521261778386d76e59c784bb83ee
font_01_sfnt_off00012c7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C7A 12064 bytes
SHA-256: 4973822490852f8177fb5b98638131cf395424c26d9b0378dd8fa8999798a26d
font_02_sfnt_off00015514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15514 16092 bytes
SHA-256: ee796b0d072c3da784915329e3d40b60a5f3ef2e5e1937d62fc4d7a384cee729

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