Malicious PDF — malware analysis report

Static analysis result for SHA-256 d59c00e28e22dd56…

MALICIOUS

PDF

79.1 KB Created: 2021-03-19 04:10:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8bfec466906112ab2120d2f2220b7bc9 SHA-1: e7647c1aa76f834d77107a2f9405ec64ec935cd3 SHA-256: d59c00e28e22dd560e83a23d0278f5b327c375cda4a69ecb02855b0c2cb6a797
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a secondary payload or conduct phishing activities. The document body, though heavily obfuscated, appears to reference product information, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jumiwimov.ru/strik?utm_term=dell+inspiron+n7110+price+in+pakistan PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463538/normal_6001c8577bfa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387233/normal_604e93b148b35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392652/normal_5fce31c20da8c.pdfIn PDF document text
    • http://stonersfranchise.com/26237263410wqd9s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413703/normal_5fd982caba4ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414689/normal_6000cae57bb90.pdfIn PDF document text
    • http://reduslim-italy.site/5633400292l4djk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377678/normal_6052a4666cf58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501231/normal_5fcf6ed5385b0.pdfIn PDF document text
    • http://domsale.xyz/remote_data_science_internship_fall_20208ok8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451555/normal_60501f1be19d2.pdfIn PDF document text
    • http://ufenmac.com/5699250173v4iqd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408187/normal_600294d01f421.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b464e1af-632a-4e3e-889d-ceb8b8a7d13f/radio_thermostat_3m-50_wifi_setup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0fdf6bf-c9b8-4474-84bd-de0186bf1ead/pagexidu.pdfIn PDF document text
    • http://sozazavore.rf.gd/gmat_unofficial_score_report_sample.pdfIn PDF document text
    • http://wopovivatidudez.epizy.com/ethnography_of_speaking.pdfIn PDF document text
    • https://a52dd608-e7dd-4d50-8005-e0fd7a3896b4.filesusr.com/ugd/43d2fc_3e50efbf2ee841fd9bb8d7ada81f38f3.pdf?index=trueIn PDF document text
    • https://11ab4cf5-156d-4417-99e9-5039b2a7eb5f.filesusr.com/ugd/82d61e_ebc82649926e40b49f8c4f5c82f4b381.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/14c78acd-4b65-4838-9262-817af8316cf7/ritusefiduxewufatesivik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1340c00d-8d54-4cfc-b6c2-e7eb4a269775/how_to_pass_class_b_cdl_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b02e9cdb-dfdb-4cec-9fa0-4502fc12d01f/what_are_the_instrument_used_to_measure_current_voltage_and_resistance.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DC 5052 bytes
SHA-256: b60ff3d61fb36be1493adb72611e06792a71460235ccce0b377292533db40c3b
font_01_sfnt_off0000f81c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81C 11972 bytes
SHA-256: c81892fec23d563e221d7fcb1a3ee8b1047c46377ca1e454f0e5d471fde74d69
font_02_sfnt_off00012078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12078 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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