Malicious PDF — malware analysis report

Static analysis result for SHA-256 08f6e5111f23bc73…

MALICIOUS

PDF

75.9 KB Created: 2021-04-20 09:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7dd60cd173317459f1bf453679ac1ecb SHA-1: 2dcb05e020715c0d9235d269dff24f1414bc5663 SHA-256: 08f6e5111f23bc7306a0d81971696c5bbcebf3b8d7e693cbb80b2437748cda40
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 0.9992

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://seumenha.ru/strik?utm_term=libro+de+quimica+organica+john+mcmurry+pdf PDF link annotation
    • https://zibinileder.weebly.com/uploads/1/3/4/7/134748255/relazomovaxejenuso.pdfIn PDF document text
    • http://joxetinosutuj.iblogger.org/3163052146.pdfIn PDF document text
    • https://wejobufobugof.weebly.com/uploads/1/3/5/3/135348322/wilefomadof_podaxajumededa.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/ihbc4ie/ios_pac_file.pdfIn PDF document text
    • https://cdn.sqhk.co/zutoruxutu/bQthdjh/screen_video_recorder_for_pc_app.pdfIn PDF document text
    • http://domensita.fun/section_8.1_covalent_bonding_worksheet_answersyymwe.pdfIn PDF document text
    • https://cdn.sqhk.co/rojozedofaf/A7iiSib/call_of_duty_mobile_download_android_apk.pdfIn PDF document text
    • http://martakkord.ru/42772262231yx2j6.pdfIn PDF document text
    • http://prostochillforum.fun/17454136180ff9wm.pdfIn PDF document text
    • http://fortuneo.biz/jasperreport_java_tutoriallgux2.pdfIn PDF document text
    • https://nebomigefut.weebly.com/uploads/1/3/4/3/134359696/vomiperofilof.pdfIn PDF document text
    • http://mainsale.info/metric_conversion_worksheet_1_answers_keyskrje.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxafopagad/fhjibas/pepi_hospital_game_how_to_play.pdfIn PDF document text
    • https://dexusejigisi.weebly.com/uploads/1/3/0/7/130739233/nefuteve.pdfIn PDF document text
    • http://savadaqwe.space/delta_sigma_theta_moratoriumc2y29.pdfIn PDF document text
    • https://pemogele.weebly.com/uploads/1/3/5/3/135324676/pusev-rifoman.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xoritafojibi.epizy.com/48888250755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2a49c79-64aa-41ff-852e-bbe38d0b8ca0/the_survival_medicine_handbook_2016_third_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00f21ece-41b8-44d4-885d-b54f9e73d2fd/how_to_replace_refrigerator_filter_kitchenaid.pdfIn PDF document text
    • http://xomawerowikevof.rf.gd/the_thief_of_always_chapter_19.pdfIn PDF document text
    • http://binutovunisiriv.rf.gd/41394368765.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05a2bc5f-47ad-431e-b530-32deda28763e/what_is_ansi_standards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/408ac059-c6d1-4a03-9f8b-38f2c73f5fcc/how_to_make_a_virgin_coconut_oil.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_off0000e5ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AC 5744 bytes
SHA-256: 7612932e28cf6e66c1746109d5748294ad6f46c3fb30af539395e6a2805d377f
font_01_sfnt_off0000f917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF917 11828 bytes
SHA-256: 6c8478b58ca102e1a166676a84680cf1b44b7802d98fad0731224e65e8aeb599

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