Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e55b8fd04682b44…

MALICIOUS

PDF

79.2 KB Created: 2021-03-02 09:43:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: abf6bde2119922d00ce68b5245d78cfe SHA-1: a883bbc9a17fa344a04295ed979d37d0512c736e SHA-256: 1e55b8fd04682b44f99cfdb461cca33717696e7832487d1fdbf7170dd05367a0
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to car maintenance, aiming to trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/strik?utm_term=how+to+install+goodyear+assurance+wiper+blades PDF link annotation
    • https://cdn.sqhk.co/bisozowinala/ijCwRmn/scrabble_word_finder_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/volumusigu/Uhciaii/business_plan_for_small_business.pdfIn PDF document text
    • https://cdn.sqhk.co/seranowe/M4jbii0/words_that_mean_fun_that_start_with_th.pdfIn PDF document text
    • https://cdn.sqhk.co/tixunudixa/gifhcN8/tangled_ever_after_characters.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/WFib5hg/17682584223.pdfIn PDF document text
    • https://cdn.sqhk.co/legikowe/RXG5Qij/total_war_steps.pdfIn PDF document text
    • https://cdn.sqhk.co/fibafape/phc4idt/27777947367.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/jgyFgiw/zunitawuwuval.pdfIn PDF document text
    • https://cdn.sqhk.co/sadopore/dtSIgjs/camera_magical_download.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/ruzaganog/calaveras_lake_fishing_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/ronufuxemiwu.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/zufizowizaxetufumomon.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/gilamujevon.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/14681198821.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/sap_bods_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/75563973999.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/extracellular_materials_and_fluids_concept_map_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/96478052436.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_off0000f897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF897 5536 bytes
SHA-256: bac7284769e161cf28fffd7216007108478746b213d74b5e33898fdec55cdce6
font_01_sfnt_off00010b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B86 10408 bytes
SHA-256: 7430e2f184e8cc77c70997971d07d967b95e5b8fa317cc2427b23d75b5b89f53

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