Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5e1d379d4a8129…

MALICIOUS

PDF

66.6 KB Created: 2020-11-10 06:40:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9c864337986d3f9c736a75c9db77a530 SHA-1: d7ec160aff9cf047901b9ac894f408fb1b1f7224 SHA-256: ae5e1d379d4a8129b3a354a086c33f53ec65d55b9f3316e1e210900e7848020f
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 0.9997

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://trafffe.ru/strik?keyword=gary+fluck+auctions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389794/normal_5f9d08419ae29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f8712319ddcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386086/normal_5f8d4409109d8.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/mudurixo/cobra_2500_watt_inverter_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cac0378-5a13-465f-9d63-b295d9cda73f/muvejarexosasijer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d3f08d5-5dc0-4d71-accf-dbaf30ab211f/essie_eternal_optimist_number.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/skyrim_where_is_black_briar_lodge.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/logical_reasoning_cause_and_effect.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/action_research_model_of_change.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/indonesia_tourism_statistics_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d03afa3-d7f6-4c5f-a501-6da60ca92081/haynes_manual_online_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_off0000c7af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7AF 5072 bytes
SHA-256: dddd0266227a8f2467a4591bd7eda9ae51fb1d26471c245a6d5f8806b9344524
font_01_sfnt_off0000d915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD915 11076 bytes
SHA-256: 45e9f3765b274ae5e1b515e8a346a23612ec39d38cfa0b79ef695fd0114deede