Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9fe2ce688ff9f3f…

MALICIOUS

PDF

68.5 KB Created: 2020-12-23 01:30:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1b6709fce87cc0ca5e2808f19c1493ca SHA-1: 139d9da495ab5a413c4db2ee7a006016a2aa8b57 SHA-256: e9fe2ce688ff9f3f9857a60465eee4dd807fb444a01b2ae0ccbc9aeffc885e21
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a URL pointing to a suspicious domain. ClamAV and an ML classifier flagged this PDF as malicious, specifically as a phishing trojan. The embedded URL is likely used to redirect the user to a malicious site, potentially for credential harvesting or further malware delivery.

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://traffnew.ru/strik?utm_term=best+new+board+games+june+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377381/normal_5f90fd08c0dfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450148/normal_5fdad7434b172.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455642/normal_5fcaa7abe9981.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453333/normal_5fde66e0e2f25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380073/normal_5fd3079081751.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367286/normal_5f874d48bdc1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418762/normal_5fc851a23cca9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406455/normal_5f9b43c904f60.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409396/normal_5fcc1e7ba933c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428335/normal_5f9e7476c92b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc1d0d6bd14ff0dd2a325bf/t/5fc648394f98375720b4aeaf/1606830142888/81009269701.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d5a48139af03765e4d31/t/5fcbe76a9708706f39a96474/1607198570807/27893821217.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a963996-1026-43f8-91c5-a4b469faf5c4/argus_c3_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cff2ba7b-c0fb-412a-b1d5-c0aceef93b35/game_of_life_electronic_banking_rules.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc110e511f6a419848698ae/t/5fc63442f8cdb769c6b6b557/1606825026497/90225119545.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_off0000cd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD80 5744 bytes
SHA-256: 1d0e124b47ae3b705db454354de143c038b69e1c07d0b11f8fa3dc1ce76979fa
font_01_sfnt_off0000e10c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10C 10680 bytes
SHA-256: a8d4c3e0276359ad57468ddfcd291d98f827c32a8999be514c523125b5e8985d

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