Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eed2fb80fafc0f8…

MALICIOUS

PDF

81.4 KB Created: 2021-03-24 15:51:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 2d69c9962e6c406e5202be4c90757ba6 SHA-1: 53b22d92ce250fec91c46abafa53c9758487bdac SHA-256: 7eed2fb80fafc0f851a132228736dd78343a5593397270c7e675761b396b9521
126 Risk Score

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 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/wix?keyword=pandora+internet+radio+apk PDF link annotation
    • http://seplafond.xyz/what_is_the_blue_book_value_of_a_2014_ford_escape7f26o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505102/normal_60316da5122de.pdfIn PDF document text
    • http://kaxazul.iblogger.org/95823336534.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422144/normal_5ff04c9c7edff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372983/normal_601d801942d69.pdfIn PDF document text
    • http://torchland.xyz/roomba_655_battery_replacementf94mf.pdfIn PDF document text
    • http://salonapp.xyz/the_filmmakers_handbook_steven_ascherb9301.pdfIn PDF document text
    • http://bestcreditcheck.info/jane_austen_pride_and_prejudice_literary_analysis34syc.pdfIn PDF document text
    • http://kifikawi.66ghz.com/dimensional_analysis_worksheet_chemistry_answer_key.pdfIn PDF document text
    • http://vajamerafimal.iblogger.org/cisco_linksys_ea4500_software.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465396/normal_6037e6452faa3.pdfIn PDF document text
    • http://scarcebook.com/letumujpqt0v.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/como_crear_archivo_en_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dc438dd-7846-436e-9fd7-8cc4295e1129/wonemorevepepaluluwagum.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/animals_picture_with_name.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/jonulakomodejiwenoxo.pdfIn PDF document text
    • http://zirugebo.epizy.com/41825357129.pdfIn PDF document text
    • http://gogewarixisude.epizy.com/degradacion_de_proteinas_bioquimica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b513cfbc-d9b4-42f8-9d95-9c589b3e6385/how_much_do_maids_get_paid_in_saudi_arabia.pdfIn PDF document text
    • http://likoruta.epizy.com/barnum_museum_song_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/rocksmith_2014_cherub_rock.pdfIn PDF document text
    • http://tugojan.rf.gd/all_sql_queries_with_examples_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D3 4808 bytes
SHA-256: 5d3320b769eebcd2324017e0a9bbcaffe4c2940198a3a8b917abe46f9dfac529
font_01_sfnt_off00010733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10733 1936 bytes
SHA-256: 84daf345e21b08075a6e329eeacb0a13a0447ddcc3efc64e98a9a4ab9c6a9d9d
font_02_sfnt_off00011074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11074 11452 bytes
SHA-256: 4c1a0c546fb6e1fc9b4c22de0e6c14b03a654de6fca41f9a60eb191857b1aaa3