Malicious PDF — malware analysis report

Static analysis result for SHA-256 8593ee7e20084c8a…

MALICIOUS

PDF

104.3 KB Created: 2021-03-02 15:16:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 0d9c79f2a9ed8df21791547ca6c80aaa SHA-1: 27073d45330be527656960eeb9316736d6eca706 SHA-256: 8593ee7e20084c8a07ed9d9d05cca482f9a53ca27667a4a5cad48ef10c8302be
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that leads to a domain associated with phishing lures, disguised as information about collecting small claims judgments. No scripts were extracted, but the presence of the malicious URL and the nature of the detection strongly suggest a phishing attempt.

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://maypoin.ru/award?keyword=how+to+collect+small+claims+judgement+florida PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4445881/normal_5fcb56fcdf5a5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423133/normal_5ff95f54c43b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455194/normal_5fe4817c155d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460463/normal_5fcf4ace90631.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484359/normal_60390fc1c7ce2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379230/normal_5fec7a4c4d3c3.pdfIn PDF document text
    • http://fidofawi.medianewsonline.com/kudavujokega.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419235/normal_6039a96975413.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tulajadulixo.myartsonline.com/what_is_a_certificate_of_readiness_in_divorce.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/hey_jude_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/51262093319.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/96815369853.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/wexusilag.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/9230533699.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/57115305116.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_off00015bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15BDA 5468 bytes
SHA-256: a85fbec6bac87a800d656d50f9f1d12ed6f5184afa20301ca0165a6a23a1492a
font_01_sfnt_off00016e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E76 10832 bytes
SHA-256: 43eb52cf893c61e772e96344f567a2131090f3696a810cc18ed590039255ba10

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