Malicious PDF — malware analysis report

Static analysis result for SHA-256 a63b4aa486469359…

MALICIOUS

PDF

71.6 KB Created: 2020-12-28 08:42:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 2bf94433a5280866c268c9a10edc6415 SHA-1: cae4f98ae6d9734eb2a9e70f6e121e89159d4b52 SHA-256: a63b4aa486469359e74cabcf531a15196ed5ce76918b44f534b56acea963353c
214 Risk Score

Malware Insights

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

This PDF file was flagged by multiple critical heuristics as malicious, including a redirector link to known malicious infrastructure and a PDF link farm. The embedded URLs suggest an attempt to direct users to potentially harmful content. While no scripts were extracted, the PDF structure and linked URLs indicate a phishing or malware distribution attempt.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/aws?utm_term=answer+me+my+love+sheet+music+free In PDF document text
    • https://cdn.sqhk.co/pegebatanuz/5nEwhiW/lalevuduxonidemiraga.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/0whjOv9/89705113239.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/3b011182f63dc.pdfIn PDF document text
    • https://kokejegifuro.weebly.com/uploads/1/3/4/4/134477846/5033499.pdfIn PDF document text
    • https://cdn.sqhk.co/podiwilur/ejegfHS/arcade_games_for_sale_denver_co.pdfIn PDF document text
    • https://sogokuwuze.weebly.com/uploads/1/3/4/5/134500874/2691823.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/b82f9acf-df34-403e-b19c-f84fbd88323f/60487417268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e87f905-b4f3-4ea3-b5ba-236d6db6d6e2/66962812964.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/41672765829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ace42b7-ea7e-4317-9349-b2b9c559b17f/61538110769.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bea493a2-78f0-4bb9-aaaa-68b559fea516/linux_basic_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3cf1569-2dc7-416f-aa11-d084514bbaad/93326318757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73cd4ac5-ad55-4f78-b068-587607c18041/jewozoredasataforiwu.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_off0000dcea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEA 5156 bytes
SHA-256: 0138609d6872625bb927076b1448fbffcf7e973fdf3ade7a1b8b05dbff273b1e
font_01_sfnt_off0000ee66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE66 10312 bytes
SHA-256: 54364bfd24beca2b983fe708fc9e3b2237a8650f6b1d070711d216ea4e210370

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