Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a9e7b84d83450c…

MALICIOUS

PDF

63.9 KB Created: 2020-11-12 22:26:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d17a137688646071740fa2438544a51b SHA-1: 5357e43699089b9ec0fc9643554e9b6e0665556c SHA-256: 09a9e7b84d83450c75334adeb04b737538e842a19cb094b1ce0e6d85c974661f
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://trafffe.ru/123?utm_term=cherrypickers+guide+6th+edition PDF link annotation
    • https://mukaxonalox.weebly.com/uploads/1/3/4/5/134580963/54913f20a33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416930/normal_5fad9200c0681.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370097/normal_5f91015ea3b05.pdfIn PDF document text
    • https://gupebaxederor.weebly.com/uploads/1/3/4/6/134691072/firage_tabokinub_debefewurujiba_lurovemire.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402721/normal_5f9915bc3943e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390056/normal_5fa2fd98f2f3b.pdfIn PDF document text
    • https://rapovadok.weebly.com/uploads/1/3/4/7/134705404/ad93e9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373505/normal_5f8b57460942d.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/tetofamuxulil/63997375487.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/biforugovodogafatosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6abb8309-9945-4665-b164-2692c6db40b7/57066592665.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ab8490d-058c-40c4-8bd8-1f931af4850d/w_shape_dimensions_and_properties.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_off0000bb6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB6E 5316 bytes
SHA-256: e90964e1892ff1eba80956eb65a089e883f4ab3c9cbfe3abedcd90e45991c273
font_01_sfnt_off0000cd8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8A 11040 bytes
SHA-256: 7539dd1d52c9062970d07885a43320cc0c949f9045c7d3422490e013e56768cb