Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e59a98c046fb709…

MALICIOUS

PDF

77.2 KB Created: 2021-04-03 01:07:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 36c806f7d69bf77ddc40a9bf70862640 SHA-1: 881d250841779a9fd65c399fd55ce1331df9f899 SHA-256: 0e59a98c046fb709194b31b707afcf7106f35895121918d96f7bf178ac531091
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://nipisod.ru/strik?utm_term=books+like+ask+the+dust PDF link annotation
    • http://sis-paypal.com/the_station_practice_email_addressph34y.pdfIn PDF document text
    • http://lunamawel.22web.org/what_time_stock_market_will_open_today.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384652/normal_6024b97f7306a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461505/normal_60282845b2df8.pdfIn PDF document text
    • http://gta-msk.ru/the_chaser_by_john_collier_plot_analysislj104.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417999/normal_605957633eca2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371261/normal_605d7e2b3f01b.pdfIn PDF document text
    • http://radanews.site/solving_rational_equations_by_cross_multiplying_worksheeti5jjz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421969/normal_5fe575c2f01c6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nesitojogosew.epizy.com/79414038756.pdfIn PDF document text
    • http://sojidalome.rf.gd/governance_and_public_policy_css_books.pdfIn PDF document text
    • http://xeladijigaw.epizy.com/bivilawedelodobonizodujin.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/67635382629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfd2c1f0-e57d-4d5a-80fa-dd5f1e4e77d7/nikon_d5200_specs_and_price_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/export_outlook_contacts_to_excel_sheet.pdfIn PDF document text
    • http://jonogib.epizy.com/starbucks_delivering_customer_service_harvard_case_study_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/busybody_crossword_answer.pdfIn PDF document text
    • http://gejoves.epizy.com/62502638724.pdfIn PDF document text
    • http://losexuzumobobe.epizy.com/28570971761.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/free_science_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15bbad8b-d03a-4c12-8f4d-d299f3f355ea/xirawodapudeponobakajalo.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF035 4932 bytes
SHA-256: 5add6035be60823f7f92956f5190c51ee7828478532ee639592c235a3ab9df1f
font_01_sfnt_off000100f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F8 11016 bytes
SHA-256: 31ef1340b182314f10532506885a0deb801ecf29e97eaa981e2c7e6f65e373f7

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