Malicious PDF — malware analysis report

Static analysis result for SHA-256 301a7d9fb661359c…

MALICIOUS

PDF

66.1 KB Created: 2020-12-08 14:40:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 47278f92bd479c61292d2319e6243f2c SHA-1: 9595d893910979e5c416b72ab1e00c42e677ffc2 SHA-256: 301a7d9fb661359ca82b22500e1b75133efa5a2c8d0c182acf9d9420397219b7
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=the+fall+of+the+house+of+usher+summary+wikipedia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459777/normal_5fa1ae47c70d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384046/normal_5fab8ba7de50b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368751/normal_5fc78b452854e.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/28a24a09-e763-4459-ae3a-79f15241ccce/books_about_dogs_going_to_heaven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef3ab493-8604-4ba7-9756-eb097a99189b/native_rwandan_crossword_clue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65e2face-ee0b-4b27-ba02-09235f0ae133/17388113628.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbceeb62c6de34c7a3781b6/1606217399146/xulemesesafow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7f0699c-4c40-4d06-9a55-29a39733a341/tubemate_apk_download_for_android_4.2.2.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/analysis_for_office_2._7_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc794fa791da6493f6b33f0/t/5fcb2d4e1880ce05e846b69b/1607150927108/2_player_games_pc_steam.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/jirivatasorik.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_off0000c720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC720 5488 bytes
SHA-256: a3582a76a67b9b4aba93b6b2bf31a512b2e89a6a8983c5389bbd9ec4a8c0714d
font_01_sfnt_off0000d9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B7 9880 bytes
SHA-256: 1f1a15d31c85aa140ff32cb56fb9414ad66641c758829adfd4d379c074e2ae56