Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba1be8bcfc252e1…

MALICIOUS

PDF

65.8 KB Created: 2020-11-10 09:00:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bf5a06fd91e560c805341ef7f657d98b SHA-1: dbcbc3bd42555093b2a24bc3d417fc24f59b765d SHA-256: 6ba1be8bcfc252e1081ba03aa15aa06a5adc930efeaff636c59a110a3d6379e9
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://traffset.ru/123?keyword=great+wolf+lodge+niagara+cancellation+policy PDF link annotation
    • https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/xuludes_pixaleluvuwe_tevimov_nubumalene.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392237/normal_5f8f8ac6ad86d.pdfIn PDF document text
    • https://ruwadegefanum.weebly.com/uploads/1/3/4/1/134108857/b242c8e5b6db.pdfIn PDF document text
    • https://jatilesaza.weebly.com/uploads/1/3/4/3/134316516/kutufumoduzofa-nijeripezovodil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374685/normal_5f8a31ecde76f.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/02f281cf-6a31-40ed-9778-13a2cc843080/83239498671.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/lippincott_manual_of_nursing_practice_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/37009297994.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de451819-29eb-4142-b78a-78fe848455fb/aquapure_water_softener_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3995c9a6-9492-4630-b596-29f470afd441/the_division_survival_guide_19.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7cd841f-1f3d-44bb-927f-52569ed4b0bc/bufajetugulov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdadb42c-3c84-446f-a539-aa8df090411c/lukujobonibutixo.pdfIn PDF document text
    • https://s3.amazonaws.com/wejalixex/bojevugomakudozog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b007b781-c222-4b8a-9e1c-bb61b5cdde07/wonozadiga.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_off0000bfce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFCE 5372 bytes
SHA-256: 7d0ac7867ec753406944f91158488ec58d62fc3603bc7e63d7764ceee251a9d6
font_01_sfnt_off0000d245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD245 11716 bytes
SHA-256: f8ec07a69ab813383620008fb22bc4f8047298e530d158a96aef8919f1166fde

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