Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5739681351b7d00…

MALICIOUS

PDF

81.4 KB Created: 2021-02-12 12:10:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 38b48dbbf96c3b1a48d8080c8104582d SHA-1: 38cba7d2ed00079292e6cd826df9a185e1f94bda SHA-256: e5739681351b7d0058da9b76bcc956d071a14fea8ca6b6f0c6b14845e6c3e3bc
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://seumenha.ru/123?utm_term=arrowhead+beach+nc', suggesting a phishing or redirection attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to lead users to a compromised site.

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://seumenha.ru/123?utm_term=arrowhead+beach+nc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366325/normal_5ffe2868a105d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413019/normal_6016eb93be08e.pdfIn PDF document text
    • https://sedivunoruset.weebly.com/uploads/1/3/4/8/134859312/sixamodib.pdfIn PDF document text
    • https://dosupara.weebly.com/uploads/1/3/1/3/131380612/nafogovikuruzamafa.pdfIn PDF document text
    • http://robot3.site/accessible_parking_permit_formj9gpp.pdfIn PDF document text
    • http://webpost.pro/stick_ranger_2_wiki7t24s.pdfIn PDF document text
    • http://kewisanoxiv.66ghz.com/acute_pancreatitis_ppt.pdfIn PDF document text
    • http://redpandarecycling.com/1563013534dz26o.pdfIn PDF document text
    • http://regse.website/652890887valgn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485153/normal_5fff9d0c771a1.pdfIn PDF document text
    • http://mamontov-net.cc/freshwater_snail_care_sheetckpah.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477367/normal_601b2eb40dcdf.pdfIn PDF document text
    • http://liketime.fun/ruramedefejizijiz8907x.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/vipuxafol/45500368610.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/maharashtra_cet_2019_application_form_last_date.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/entities_exempt_from_fatca_reporting.pdfIn PDF document text
    • http://ropajevunowijit.epizy.com/biggest_difference_between_android_and_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/ethiopian_movie_free.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_off00010200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10200 5036 bytes
SHA-256: d3a5798ea539e8f599e5e9e146cecd3e4d1dd9a387ebaafeea4675e3ae2c3046
font_01_sfnt_off0001132a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1132A 11020 bytes
SHA-256: e971ab0aa134d5edb2ff274132304439a683ba16e909b27e95bd4bc9cc943243

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