Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ea880d650bcea6…

MALICIOUS

PDF

79.0 KB Created: 2021-03-06 22:55:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 67f365a97eecb3ec695f3d17b0103569 SHA-1: d320b19fd1c5824673a3395c59b28433712a6294 SHA-256: 14ea880d650bcea6cc5507e98c7f2991c229cee7506f44b3ccda4c3dd5db14b6
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=how+to+replace+laterals+in+a+sand+filter PDF link annotation
    • http://potusowo.22web.org/pesaw.pdfIn PDF document text
    • http://kavelokafozi.medianewsonline.com/what_are_the_similarities_and_differences_between_cats_and_dogs.pdfIn PDF document text
    • http://diwolekeku.22web.org/vomewoxegeginaxoxanod.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/hgiij8O/tijaf.pdfIn PDF document text
    • https://cdn.sqhk.co/nowagenika/OifWgce/voicemail_on_iphone_says_call_voicemail.pdfIn PDF document text
    • https://cdn.sqhk.co/gewanunu/Ehgiigf/woodworking_for_beginners_kit.pdfIn PDF document text
    • http://zazorin.scienceontheweb.net/bomba_de_ariete_hidraulico_funcionamiento.pdfIn PDF document text
    • http://dirujadejefogax.iblogger.org/52157779586.pdfIn PDF document text
    • https://cdn.sqhk.co/kikutajaz/cihibfM/27676992117.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rovizomaguwex.atwebpages.com/fupapit.pdfIn PDF document text
    • http://lorabedujeweb.epizy.com/87954920760.pdfIn PDF document text
    • http://lunofalogejutu.epizy.com/lotebuf.pdfIn PDF document text
    • http://fikexole.rf.gd/john_deere_54_mower_deck_parts_diagram.pdfIn PDF document text
    • http://pubometev.rf.gd/monthly_calendar_template_by_vertex42._com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7f58604-447c-4f3c-a467-4e6cf48b9683/gimoperewiza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f95d949-ac56-4130-8df5-975acdde0b61/the_magic_school_bus_book_characters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f07a8c8-ce5b-4ca1-8e85-69867bc4af4c/value_based_interview_questions_healthcare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fea3f5aa-4943-4cc4-bd57-c734a5210261/verizon_phones_work_with_straight_talk.pdfIn PDF document text
    • http://webukoxaxox.rf.gd/how_to_cook_brown_rice_in_a_tupperware_rice_cooker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63bb339a-edc3-4ffe-bc4f-bde37b036a23/war_of_the_worlds_2019_bbc_america.pdfIn PDF document text
    • http://vuruwabudakase.epizy.com/56817342186.pdfIn PDF document text
    • http://nuvijexuwafado.rf.gd/perspectiva_isometrica_caballera_y_militar.pdfIn PDF document text
    • http://xabudavadeguvo.myartsonline.com/febujifu.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_off0000f94d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94D 5200 bytes
SHA-256: 29a4ab8a4f33a54b603a0ef9d0390268cef61b0765aa2994889b373a181a07c3
font_01_sfnt_off00010b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B19 10272 bytes
SHA-256: ff6a08a72740459253e054e0dc85cf3712037c2247fbd74a81800c6e4d60e021

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