Malicious PDF — malware analysis report

Static analysis result for SHA-256 9676c79d5690116e…

MALICIOUS

PDF

75.7 KB Created: 2021-03-16 07:53:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 12a3ba11e9c1e39d49dd4b9e80a026cf SHA-1: 5b8ac21303aaf5d4419df380d7101f46f8cfd4a1 SHA-256: 9676c79d5690116e36ed1f9f243350ae213eaace7a7a7b278a2978e8495a5384
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://crophysi.ru/wix?keyword=kohlman+evaluation+of+living+skills+test PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489846/normal_601b64c6158fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414866/normal_601d84211c5b9.pdfIn PDF document text
    • https://cdn.sqhk.co/nodujugebi/gqigijw/27928718336.pdfIn PDF document text
    • https://cdn.sqhk.co/fasaparoba/hiixgiH/wewipazupatiponozeta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_604cbfc9b5219.pdfIn PDF document text
    • https://cdn.sqhk.co/visukodo/gdjcKgf/kart_racing_parts_usa.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/1226563555.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464053/normal_5fd6458dbdc31.pdfIn PDF document text
    • http://papasewavixuk.22web.org/cv_template_for_jobs_in_canada.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393349/normal_6002bd5f35fb8.pdfIn PDF document text
    • http://fadulifakibul.medianewsonline.com/76041491966.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369496/normal_5fdad3a08a5ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455380/normal_5fcdf9f48d126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463532/normal_602b24f289a2c.pdfIn PDF document text
    • https://cdn.sqhk.co/pavujakorige/ihRrgie/griswold_christmas_house_lights.pdfIn PDF document text
    • https://cdn.sqhk.co/zipirevofu/HjfOjaY/pigubawul.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/bokelur/kitiwenubejajejaroxiwuwiz.pdfIn PDF document text
    • http://fixiwerasame.rf.gd/az_vehicle_bill_of_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/amoeba_management_report.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/shutter_movie_2008_free.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/lobowitapevujefovonalizi.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_off0000eac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC3 5176 bytes
SHA-256: c92f2f142efda782a30f6e83c2eacc9732ca7aaa69860ce2f71ac242e41a0077
font_01_sfnt_off0000fc4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4D 11012 bytes
SHA-256: 486e3fb31dc5c485f6c8cd1e93859013691844bdd02db3bd9a1e8422393767a5

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