Malicious PDF — malware analysis report

Static analysis result for SHA-256 e689f5c21c82c5e4…

MALICIOUS

PDF

88.6 KB Created: 2021-02-14 22:56:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2e56795985572f1986ec2d8d8edac6a8 SHA-1: 27113fbf617b60c0b60deba17d1fe7fa9b541842 SHA-256: e689f5c21c82c5e47b5f240e04d954baf839c5c3dbbaea238d146c3483635b55
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 0.9996

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://bologen.ru/wix?keyword=walmart+threats+june+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485929/normal_60127bf5b37e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414500/normal_601a2b1d6b570.pdfIn PDF document text
    • https://jagedebake.weebly.com/uploads/1/3/0/7/130738918/dotimavelarubidi.pdfIn PDF document text
    • http://pedalini.club/12656443761t37vj.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/bJuUjfx/19051965039.pdfIn PDF document text
    • http://xefemile.22web.org/travel_vlog_background_music.pdfIn PDF document text
    • https://cdn.sqhk.co/gunuzuli/VN2jaTI/57394243114.pdfIn PDF document text
    • http://gramnews.xyz/60173296081sumou.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380411/normal_601644e4f357a.pdfIn PDF document text
    • http://copyright-services-us.com/zaledubumiritawenokuntuv6m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420434/normal_602182928a9d1.pdfIn PDF document text
    • https://kigovedinefetup.weebly.com/uploads/1/3/1/3/131384362/8bb2d.pdfIn PDF document text
    • https://cdn.sqhk.co/feduvefas/NYvhcfA/walmart_jelly_filled_donut_calories.pdfIn PDF document text
    • https://vixezikuf.weebly.com/uploads/1/3/1/3/131383943/5963731.pdfIn PDF document text
    • https://xalokelunubame.weebly.com/uploads/1/3/1/1/131163690/3e8c04.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tanasebebibe.epizy.com/little_red_riding_hood_basket_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/monthly_business_expense_report_template_excel.pdfIn PDF document text
    • http://gadoriwufes.rf.gd/sequence_stratigraphy.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/mission_mangal_box_office_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/don_amitabh_songs.pdfIn PDF document text
    • http://betiravel.epizy.com/kcet_2018_answer_key_base.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_off00011ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CE3 5288 bytes
SHA-256: c424daa1d448a0143ff6de7aa017a5e11fa1bcd8d6e08317f506583dc8030370
font_01_sfnt_off00012ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EC1 11128 bytes
SHA-256: 89e5a8dce53b5408562448ed6d2e4e41e585de139d89021b19ccf527063e940e

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