Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3a3a7fc60f30621…

MALICIOUS

PDF

63.0 KB Created: 2020-11-13 15:12:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e2d946308f2f60e88567e4ee3efacfc7 SHA-1: 194da29889fcb3cb9a2dee6d39665be6cb291f5a SHA-256: b3a3a7fc60f30621250bb869cf9f358390868b6762201d18b2ddd0506206faac
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The presence of a link farm heuristic and the ML classifier's high confidence score indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to potentially harmful content, likely for phishing or malware delivery.

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/123?utm_term=motorcycle+accidents+near+me+yesterday PDF link annotation
    • https://lebotuzipum.weebly.com/uploads/1/3/4/5/134519329/1705173.pdfIn PDF document text
    • https://birijoxumel.weebly.com/uploads/1/3/4/5/134587798/20bfbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392209/normal_5fad53bacc0ca.pdfIn PDF document text
    • https://bizigixuwufi.weebly.com/uploads/1/3/4/6/134692051/b8f009.pdfIn PDF document text
    • https://vebunigujop.weebly.com/uploads/1/3/4/3/134367951/fb8499c50bc.pdfIn PDF document text
    • https://derutibedevore.weebly.com/uploads/1/3/4/3/134354066/6072382.pdfIn PDF document text
    • https://daxedinojadu.weebly.com/uploads/1/3/4/5/134590150/5931746.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/lixisariwulo/88813201769.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29152ac0-a4f5-45aa-adf7-1b3dad73eb38/81868028904.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b00b09b6-6040-4754-b1ef-c679ef7cb687/41009593167.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/gary3dfxtech_firestick_tv_apk_s.pdfIn PDF document text
    • https://s3.amazonaws.com/xebareto/ap_world_history_americas_spice_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab4517b9-3f0a-4ee4-8453-f2516f7dae77/kupov.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/clarke_raines_murder_sentence.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_off0000bbd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBD0 5192 bytes
SHA-256: 289ef58ae34600e2f92d2c629b0424673253aafc44e362caaee50f0d9124c164
font_01_sfnt_off0000cd76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD76 9824 bytes
SHA-256: 13a9dda108e2ff6a7beba3fe7cc0f38d8f5b65e79c1fcdf9198ccf273803b484

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