Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7b4d102ccd24114…

MALICIOUS

PDF

66.0 KB Created: 2020-11-17 03:54:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 7b12f93ffa48415a3b8678dc7fd4c7ed SHA-1: 16a587a540192dcfe34a3c27db16f678cde1d129 SHA-256: e7b4d102ccd24114db4d435b644a3d8bd70c92bb8df57dbcd71c495c3a6770d9
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to redirectors and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity, likely serving as a lure to external malicious content.

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
  • 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/strik?utm_term=the+disappearance+of+childhood In PDF document text
    • https://vuxerapetu.weebly.com/uploads/1/3/4/5/134599288/fagerutipewukulak.pdfIn PDF document text
    • https://xedexebil.weebly.com/uploads/1/3/4/2/134235570/fiwuxurakilidewa.pdfIn PDF document text
    • https://jedunifoxawixe.weebly.com/uploads/1/3/4/4/134458330/dubuz_medewaxemimat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5f874aa6306e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372377/normal_5f904e4cdc972.pdfIn PDF document text
    • https://vavagufone.weebly.com/uploads/1/3/4/3/134345741/xisesanefon.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/e86a2973-a7fa-4007-80e8-2954860a9508/71739957920.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0790642-e2d0-4ccf-b162-b2c7f337c18d/plague_city_osrs_quick_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/lokekodesiniduxiki.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/list_of_formal_words_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f2c751d-3463-410a-9a84-67e65f152c52/veromajexedonalaxalagebej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efdd9f6c-8dec-48c0-8460-2796facfe39e/microsoft_windows_10_hipaa_compliance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/797a2c3d-9a06-43c2-bc0f-88311507cd18/brian_tracy_eat_that_frog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/980ee79e-f915-4de2-b3e7-6b57b8ce55ed/12705364717.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_off0000c625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC625 5192 bytes
SHA-256: 344c21ba1db31e717db672a161498528ec004f3493d5cca23847c31e15774ebe
font_01_sfnt_off0000d7cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CC 10500 bytes
SHA-256: eab7baedd9e53c454492ed714f9dd092a2a764426d2b70f52db81009e6f369a6

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