Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab14add43cda2a6…

MALICIOUS

PDF

120.2 KB Created: 2020-11-19 20:54:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 602e5b377d3a59830a6163511177c9c8 SHA-1: d45964f936a89371145f214fa95ab54d1b00de62 SHA-256: 6ab14add43cda2a666df02e036ed269f1551941221c1af16a901f9ba7d9427c0
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 0.9998

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://traffnew.ru/strik?utm_term=el+laberinto+de+la+soledad+pdf+descargar PDF link annotation
    • https://kezojafedekekav.weebly.com/uploads/1/3/4/0/134096401/2303296.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382420/normal_5f9677f57b0b4.pdfIn PDF document text
    • https://fofevupug.weebly.com/uploads/1/3/4/4/134490210/sozipewu-zinudexaberij-keros.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448129/normal_5f9f82162238a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380082/normal_5f8aba4d2441b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383928/normal_5fae29f680c20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500425/normal_5fb5d9e2f0840.pdfIn PDF document text
    • https://fusorebumobem.weebly.com/uploads/1/3/3/9/133986296/sunok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408601/normal_5f9a5843e4224.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369901/normal_5f8ac530ec8e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477138/normal_5fa98cf2c2440.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/debamijizozexo/bridgeforth_middle_school_pulaski_tennessee.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/viziwoduvavirodo.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/evenflo_nurture_infant_car_seat_max_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/84976768742.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_off00019a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19A9E 5420 bytes
SHA-256: 0aaf32f66db6d09d1504f500a7ab893b097e00ef7e9fbc4e4a57c8a08930bb89
font_01_sfnt_off0001ad19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD19 11200 bytes
SHA-256: 313e59c1f57e43acbdc183266ea5c6c4342fc43141775e10532a7b0060ab2509

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