Malicious PDF — malware analysis report

Static analysis result for SHA-256 47cdf1bc02105c20…

MALICIOUS

PDF

60.2 KB Created: 2020-11-17 16:27:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 18f5a87a0ecc34d16c383604531170e8 SHA-1: ea553a120b6f3c95d535d5eb2cffa40886a0cf6e SHA-256: 47cdf1bc02105c200b12bd83c924e0f5d94c2eb768718fe6c0bc869b007c0462
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to Weebly and other file-hosting services, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards the exploitation of PDF vulnerabilities or social engineering to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=maury+county+school+calendar+2020-21 PDF link annotation
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/belapigojat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404297/normal_5f990ff85b64c.pdfIn PDF document text
    • https://jagotizepevex.weebly.com/uploads/1/3/4/4/134464701/3306380.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389820/normal_5fa350026a8bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416140/normal_5fa8738af0916.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5fa8711b167d7.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/junubozuke_vizipofu_jaxiboxovugur.pdfIn PDF document text
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/8c5bff6809a.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/juduk/53444850537.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/bilojalox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/243b8480-b97c-4425-81ed-ec014c5afb81/62821765173.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_off0000ada0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADA0 5492 bytes
SHA-256: 3679843af6d7025385e1809439d8cf7f4a92f5a37c5c5e1b0cafdafde7b614bf
font_01_sfnt_off0000c063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC063 10796 bytes
SHA-256: 03a02e69fed1cf5681f1c8a12c7c4e6c863f6bfb6866ca446efb18a92f3d9d9f

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