Malicious PDF — malware analysis report

Static analysis result for SHA-256 123092aad5d3db8a…

MALICIOUS

PDF

68.6 KB Created: 2020-12-16 08:38:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 54f3204d59daed85c301a4329eab3943 SHA-1: 97a81f9f3eab1a50ae99899a2aedc165639a72d4 SHA-256: 123092aad5d3db8a40556e5a3f866a43bc8a223d72af7dc436c6cfd98dea30e5
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. A critical heuristic detected a ClamAV signature indicating a phishing trojan. An external URI pointing to 'trafficel.ru' was extracted, which is likely the malicious payload delivery URL. The document body, though heavily obfuscated, contains text related to presidents of Ecuador, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/123?utm_term=presidentes+de+la+republica+del+ecuador+y+sus+periodos PDF link annotation
    • https://nutomejeti.weebly.com/uploads/1/3/4/7/134702699/rukozazeveb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370064/normal_5fb9dc2001caf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369164/normal_5f884f367464f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425511/normal_5fad712c6230f.pdfIn PDF document text
    • https://fategebedabeno.weebly.com/uploads/1/3/4/7/134718848/bcb576e4.pdfIn PDF document text
    • https://lonitavow.weebly.com/uploads/1/3/4/3/134355974/6b6de6.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/46b5a393-f248-4a71-8f5e-6a822344aae4/hindi_love_shayar.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/31594441303.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c32a75b0-7a9e-4890-8aba-6dca34b009a5/dibixut.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f33f2cf09257bd6c4f7e/t/5fcbef40978da30c56e61c68/1607200576915/15550872560.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/47766610692.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a3829955c744b546b600/t/5fc9fef4414f5e35237eba38/1607073524871/25786792131.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_off0000cfba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFBA 5308 bytes
SHA-256: c1b6617335eab3df1dbc3b432b4871d9c328986561467ac624b7ce0a2a08bf01
font_01_sfnt_off0000e1d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D3 10996 bytes
SHA-256: 3e1b5bf8b159e4bbd00afd3c3de6e0a3a1026125fe1afa514785cd626396ec4a