Malicious PDF — malware analysis report

Static analysis result for SHA-256 8061bb9e09e7c03a…

MALICIOUS

PDF

76.3 KB Created: 2021-05-19 06:32:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8feccd5273ca59f5ab816fb1a8d3391d SHA-1: 574dd1a03a57c05a740aee4d128983da08375ca2 SHA-256: 8061bb9e09e7c03a1764bf192c57560dfc0f2a6a1e6f6e1dc8186b370b1eca82
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9999

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/strik?utm_term=ccna+1+v6+pdf+espa%25C3%25B1ol PDF link annotation
    • https://vujezogovi.weebly.com/uploads/1/3/5/3/135348950/luruz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452161/normal_5fc9380edd1a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486190/normal_6030a74b768ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426062/normal_601f91752ff49.pdfIn PDF document text
    • https://sutulozutujak.weebly.com/uploads/1/3/4/8/134884412/funiti-zikavijavup.pdfIn PDF document text
    • https://kazazurijufom.weebly.com/uploads/1/3/0/8/130814205/genaruledafipaxixudi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/babe3899-f400-40b2-95aa-827e057d691d/sisefupiwereteki.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/salesman_comedian_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/fisher_price_baby_swing_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a3ac95b-adcb-4076-83ba-5f4f977de0fb/how_to_find_initial_velocity_enzyme_kinetics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4702ae0b-0915-40d8-845f-a1cd7aebda60/mifogunabexixuxov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/308aa24c-b2ea-4681-8fd5-b8bb130a83bd/xaxavuzuxejikuvajaturox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c3710d7-c2cc-4a57-a2e2-eada76dd5275/donadokulorafudununolo.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/gejovizafovesosizadotepam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e24d70d2-3948-451d-9e82-f5358568003d/44824822176.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/39915597676.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bd875a3-6cb0-4ffe-8f08-913f5f31ba7e/nizijovapukukuretif.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/81252485801.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e69d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69D 5436 bytes
SHA-256: a77190bdd8d789d85f509df157c0120cd66ce82ab32b3950fb7d0064c6c9c944
font_01_sfnt_off0000f8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FC 13188 bytes
SHA-256: 30f82d58a366d7ba4f320c40795f8ba90a7b4e8fe1654463e7b2366fbae54fa4

Open this report in the interactive analyzer, or submit your own file for analysis.