Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ecb30b873d5bc6…

MALICIOUS

PDF

85.0 KB Created: 2021-05-03 10:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6d286c878657a56f8bb22411c6995f4c SHA-1: e1f19cc277f5c17c239cbdc8920d024f4f3e40a4 SHA-256: c8ecb30b873d5bc689380d982dde214489662e53f71123910f08b8b2958605ec
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://ponafet.ru/strik?utm_term=how+to+use+lg+ac+remote` suggests a phishing or credential harvesting attempt, disguised as information about LG AC remotes. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs point towards a malicious document designed to redirect users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/strik?utm_term=how+to+use+lg+ac+remote PDF link annotation
    • http://hardcreditcheck.info/xomefinitaxupojabapibepigh0o0r.pdfIn PDF document text
    • http://thelandofbadideas.com/dostoevsky_demons_chapter_analysisqzkys.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/Ejcha3P/human_resource_management_salary_per_month.pdfIn PDF document text
    • http://kvyovk.xyz/90252550619hfg8n.pdfIn PDF document text
    • https://cdn.sqhk.co/vilitemeru/ijvihyQ/global_electronic_component_database.pdfIn PDF document text
    • http://ing-cliente.com/what_does_broad_brush_approach_meanjas4x.pdfIn PDF document text
    • http://brosbass.com/civilization_5_civ_guidelt8b8.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/numegubowalonan/pesodewagulagad.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/esc_guidelines_2017_valvular_heart_disease.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/genetic_algorithm_book_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/microsoft_shortcut_keys_for_emoji.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/93723966822.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/piriformis_muscle_pain_after_sleeping.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/xujodewibeviwuruj.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/ranger_boats_flippin_arkansas_jobs.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/dynasty_warriors_8_empires_events_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/cabin_fever_movie_tamil_dubbed_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/argyll_and_bute_planning_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/katip_bartleby.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/73172887675.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/what_are_the_characteristics_of_the_stars.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/reporter_l_g.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/kirebedobesina.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF896 5172 bytes
SHA-256: 7dc46f42195fc44cb462d8c7d702d9bb43f7ddb8b6603fd5285c6563ef097582
font_01_sfnt_off00010a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A2D 11484 bytes
SHA-256: 5ccc1adae9af7ffd72644d0ef775e82f63ad36ab87fc2875d9f6b8df338b1c72
font_02_sfnt_off00013122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13122 16160 bytes
SHA-256: 7e63eb3bed9c4ceaf47e86587cf77a789dba98dd2b4db382f0c7f052a0aeb8ce

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