Malicious PDF — malware analysis report

Static analysis result for SHA-256 47bf3e3e198d6a53…

MALICIOUS

PDF

65.8 KB Created: 2020-11-26 02:12:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 380b395e5926eb12d476ce0b86706429 SHA-1: b4d1541ebd525bb3f3030eab747a8730c5fe5a07 SHA-256: 47bf3e3e198d6a53893501f6bee29051586a651aaa9f1c9538d17100d985b40c
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, includes text related to 'Total quality management in education', likely serving as a lure. The presence of embedded URLs and the critical heuristic firing for a malicious redirector strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • 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://cctraff.ru/strik?utm_term=total+quality+management+in+education In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393631/normal_5f94852f41abb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403814/normal_5f913d96906c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388276/normal_5f93cdc423fde.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/denutafijepabiver.pdfIn PDF document text
    • https://fuzedefona.weebly.com/uploads/1/3/4/5/134578490/zusoz.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/pidufozu/83434707411.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12b9b3e3-fe2a-4b5d-b558-cf372824b573/wupefunewixa.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/tubuxadoluzekobuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55220bba-d849-4565-a23b-4dad17247640/applying_cultural_anthropology_9th_e.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/jigofefa.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_off0000c646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC646 5164 bytes
SHA-256: 368b85b7b49a65857107ae3154dce9a09cc9173fbc4f235db6591b86e523e785
font_01_sfnt_off0000d7ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CA 10228 bytes
SHA-256: 1782c3f08dafb28f69243f84de66b17b4782daea1e5b6225bf40ff16c2df704d