Malicious PDF — malware analysis report

Static analysis result for SHA-256 e38a689858275381…

MALICIOUS

PDF

89.0 KB Created: 2021-03-07 23:42:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bbdbb540ae7c3cd3be25d4352862fe82 SHA-1: 2970ddd36775410c5b418843cf0c157c4bf71627 SHA-256: e38a6898582753814a054aa19dd2bd20d34da63ba78b317e57fe15d40dec03cb
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 0.9997

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://dafemum.ru/strik?utm_term=pioneer+vsx-d514+remote+control PDF link annotation
    • https://zepekofudi.weebly.com/uploads/1/3/1/4/131407423/lovitezufazinukamo.pdfIn PDF document text
    • http://trylait.pro/is_there_a_book_rate_for_mailing8b8aw.pdfIn PDF document text
    • http://stavki-na-sport.site/70266600650xnnrp.pdfIn PDF document text
    • http://nakidki-alkantara.xyz/solving_literal_equations_worksheetv9dww.pdfIn PDF document text
    • http://ig-copyrightnoticehelp.com/mirunubefogajilogamuy.pdfIn PDF document text
    • https://tulopesonu.weebly.com/uploads/1/3/5/3/135318186/78d3add72.pdfIn PDF document text
    • https://nefajawijar.weebly.com/uploads/1/3/6/0/136081949/ec1be7f.pdfIn PDF document text
    • http://arboozfilm.com/pirates_of_the_caribbean_hero_s_journeyxzluz.pdfIn PDF document text
    • https://fexagire.weebly.com/uploads/1/3/0/7/130775556/bc237c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wiputopi.epizy.com/4428897524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ff76612-62e4-4bb7-bea3-f465a331ff59/jujoka.pdfIn PDF document text
    • https://db532842-334f-4efb-8993-e67ec8f20ff5.filesusr.com/ugd/bc5be3_7e37b587b6d54b32be913af0a21b60e8.pdf?index=trueIn PDF document text
    • http://gunubaxerilol.epizy.com/25853158947.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/free_checkers_game.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/bsc_first_year_chemistry_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cdf4430-a21c-4ae1-8139-78c2e8d8b753/wupomuweru.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/chicken_fajita_sheet_pan_crunchwrap.pdfIn PDF document text
    • https://8ab1a2d5-e5b1-44c5-a28c-e09959565f0d.filesusr.com/ugd/eb712c_cbab630e48c045c0a221883f39dff35f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xidazeze/intermatic_timer_instructions_dt620.pdfIn PDF document text
    • http://suxikikafib.epizy.com/lejuweguzix.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000114b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114B6 5300 bytes
SHA-256: 1b37567a3c73c8ffe15aac285b5afaf5e7f9bc296bad548bb96c41854563393e
font_01_sfnt_off000126c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126C7 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off0001322a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1322A 10652 bytes
SHA-256: 68f1cecff75108d4dda89e4f25e971e7375772547bf167d6c6d8c7700e8b8229

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