Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ebd46494829467…

MALICIOUS

PDF

43.4 KB Created: 2020-10-29 08:57:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c5b4e2aa815372ab41a579e39d538476 SHA-1: e4cb6dc7f5c06e5b2bb422b35d2df0bd292dfa54 SHA-256: b2ebd464948294679e7fa8b2ec6e322bccf52c738480450c8700e3db78b3165a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gettraff.ru/strik?keyword=new+testament+timeline+lds In PDF document text
    • https://xufuluzigi.weebly.com/uploads/1/3/4/2/134266078/zabitomisa_rixebofaluge_kamifaxojur_gigez.pdfIn PDF document text
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/zopinog.pdfIn PDF document text
    • https://rixilokif.weebly.com/uploads/1/3/4/1/134109141/navuvafaf-xonosof-pawutisetifuge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b56567b-a56e-49b4-81b4-1451a93f0fda/42783615026.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/top_high_schools_in_kingston_jamaica.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/english_alphabet_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/306326b8-7f52-497a-9c0c-b516ee6b4bef/39642085260.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/vejiga_neurogenica_flacida.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/7110049453.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/fojetodiju.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/clases_de_sustantivos_y_ejemplos.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/javascript_tutorials_point_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/autodesk_inventor_practice_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/kujikimora.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/nuvilulik.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/23143729367.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79610727-16e5-416b-8e8b-e84fddaf178f/mr_coffee_ecm250_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/voxabi.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/worlds_easyest_game_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/free_astrology_book_in_bengali.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/the_hunting_party_lucy_foley.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_off000068ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68CA 4936 bytes
SHA-256: 759a72ca6a1fe384e7e689736b8c732443dfa29a5f3d5997dac57f4ae9e383d8
font_01_sfnt_off00007998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7998 11940 bytes
SHA-256: 9b9892ec24d0b63b25230e84e900959145ee0e847284559b8955cf5405e80e71

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