Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d618dc7e12e82a8…

MALICIOUS

PDF

82.6 KB Created: 2021-04-19 04:37:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: c29837569b6218c6475ef9ab6d8c02e3 SHA-1: ecb21e0671eb22e7e64d48bbf25686619675ab2b SHA-256: 4d618dc7e12e82a81624630aefdfa9628871cfefb339c7734bc97134592d125c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that mimics a search query, likely intended to trick the user into clicking it. The PDF structure itself is also noted as having duplicate objects, which can sometimes be used for obfuscation or evasion.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://mezovuduw.ru/strik?utm_term=are+chinese+dirt+bikes+worth+it PDF link annotation
    • http://reactivaperu-2020.com/wajenuvopopapufaguxidettgrn3.pdfIn PDF document text
    • http://vezokikawelin.iblogger.org/animal_cell_coloring_worksheets.pdfIn PDF document text
    • http://babysampler.com/buzirabirapcxoy8.pdfIn PDF document text
    • http://gonalotuturopil.mywebcommunity.org/4118516311.pdfIn PDF document text
    • http://dujalubudekir.22web.org/application_for_employment_form_template.pdfIn PDF document text
    • http://nosinoski.shop/fatou_n_diaye_nuehqpa6.pdfIn PDF document text
    • http://uscarins.info/oops_concepts_in_java_with_simple_example_programs27wcn.pdfIn PDF document text
    • http://byt-upak.ru/togesabatezusojiq4be7.pdfIn PDF document text
    • http://good-production11.site/35669106170tkpyg.pdfIn PDF document text
    • http://supermagazforsale1.xyz/al_quran_englishbtteo.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/ielts_speaking_part_1_vocabulary.pdfIn PDF document text
    • http://copyrightsupporthelpcenter.com/zemomusaniziteragap4ubaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d6921c5e-ad40-47a8-8d28-605c6bd4eeef.filesusr.com/ugd/3306a4_646d6d288b4c4a88a1705c0d49144b2e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/big_little_farmer_mod_apk_rexdl.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/71210015473.pdfIn PDF document text
    • http://jigisasamupor.onlinewebshop.net/17837777124.pdfIn PDF document text
    • http://rugeritubaduw.epizy.com/american_college_of_rheumatology_guidelines_for_ra.pdfIn PDF document text
    • http://kuwexugebukutim.rf.gd/sears_rototiller_rear_tine.pdfIn PDF document text
    • http://tolojusoju.rf.gd/bidulegi.pdfIn PDF document text
    • https://48bf584d-d56c-45cf-b4f3-c1c05dce5274.filesusr.com/ugd/3f4b99_21c0236d66d3499eb769588c0aa44452.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/libeganot/sheetrock_insulation_board.pdfIn PDF document text
    • https://7be326e9-a1fd-4761-a84c-83c904220737.filesusr.com/ugd/37e945_5ae78a82d50d4545b9a7bda74c256b99.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wolina/xukod.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/funuzumuduxeteku.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_off00010817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10817 5072 bytes
SHA-256: cdeade2f3658a98f7bfb6583d237621e2e19a0cc4730b6e79b8e46e6f3b5028f
font_01_sfnt_off00011964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11964 10476 bytes
SHA-256: da6d62a36686d6dffb529713177892ddc49ed636e8c2d1570e834d8f71bc7156

Open this report in the interactive analyzer, or submit your own file for analysis.