Malicious PDF — malware analysis report

Static analysis result for SHA-256 e173b17a2b499e5a…

MALICIOUS

PDF

80.3 KB Created: 2021-02-27 21:39:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 00a47cb21ac56c37a65798ffb709a225 SHA-1: b9918595ac7186b355ca6e6b5eb2d8548b1b7de7 SHA-256: e173b17a2b499e5abe644c9126481f05f025be4dbad51a96ddf8a9bf11a1f9ac
126 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external URIs suggest it's designed to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wb?keyword=present%20perfect%20and%20past%20simple%20exercises%20with%20answers PDF link annotation
    • https://melesosinipedo.weebly.com/uploads/1/3/4/4/134475371/5b2cf58dfab7.pdfIn PDF document text
    • http://dapajurop.mygamesonline.org/ripemaxiw.pdfIn PDF document text
    • https://bamufikike.weebly.com/uploads/1/3/1/6/131606241/7d5190b1f669fd7.pdfIn PDF document text
    • http://study-english-04.space/carrier_hn67kz012_manualrfn3m.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/81113825959.pdfIn PDF document text
    • http://foxiduwanati.mygamesonline.org/vobitusabaxizaxizeseno.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/13583608896.pdfIn PDF document text
    • http://porizaritofo.mypressonline.com/how_to_start_learning_mobile_app_development.pdfIn PDF document text
    • http://zokugorevat.mywebcommunity.org/20978836362.pdfIn PDF document text
    • http://pepojen.iblogger.org/crystal_reports_totext_leading_zero.pdfIn PDF document text
    • http://mikrotikwizard.com/the_essence_of_anthropology_4th_edition_free_downloadkxdne.pdfIn PDF document text
    • http://xitawefavam.medianewsonline.com/marriage_counseling_questions_christian.pdfIn PDF document text
    • http://vegifeda.mypressonline.com/11939651623.pdfIn PDF document text
    • http://ejinaya.com/the_beautiful_and_the_damned_quotes_with_page_numbersztvvo.pdfIn PDF document text
    • http://guzexesuge.mypressonline.com/84986152211.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/can_i_notarize_for_family_in_michigan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rozazidugo.epizy.com/academic_writing_skills_meaning.pdfIn PDF document text
    • http://wuniwivufe.rf.gd/outlook_save_meeting_invite_template.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_off0000fccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCD 5556 bytes
SHA-256: aded3ed4cb5311e0062a1103d3d1bf6b98c60a90e70280cb2d46c9f029d40a79
font_01_sfnt_off00010f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F9E 10668 bytes
SHA-256: 0b04342fc87e0d2bf767cb40b2d84897e914703df116d57e5c0224db09a38f07

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