Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef6c8dec03d4f0e4…

MALICIOUS

PDF

74.4 KB Created: 2021-03-22 07:09:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8a282bc7126b0502a8ee1f149fab54b3 SHA-1: be6777a9af3f926648ba0572f101c224322473b7 SHA-256: ef6c8dec03d4f0e43bd668923965931f65e811d6cb283b9aca0b3350b278953e
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, appears to reference a product name, suggesting a lure for a phishing campaign.

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://soxebez.ru/strik?utm_term=bissell+pet+pro+oxy+stain+destroyer+spray PDF link annotation
    • https://cdn.sqhk.co/vanewano/g4LhbIZ/29167436950.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/why_do_looks_matter_in_society.pdfIn PDF document text
    • http://tanolugulutewu.medianewsonline.com/masubewegamumujesakani.pdfIn PDF document text
    • https://cdn.sqhk.co/nufanusiki/NEgfyjs/tazitasa.pdfIn PDF document text
    • http://passive-income.ru/nibonovogotaxeduf2yadg.pdfIn PDF document text
    • http://crysety.xyz/how_to_hook_up_my_canon_wireless_printer0s47o.pdfIn PDF document text
    • http://idealicacolumbia.site/hillsong_songs_lyrics_and_chordsj2b5l.pdfIn PDF document text
    • http://pravagims.net/duzamozegudiwesimu7hem0.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/jhidDge/42277025976.pdfIn PDF document text
    • https://cdn.sqhk.co/fodibaniwe/7SEgb7d/dj_marshmello_truck_pursuit.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://s3.amazonaws.com/tofizo/boone_and_crockett_typical_whitetail_score_sheet.pdfIn PDF document text
    • http://bugenuvumap.atwebpages.com/algebraic_structures_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/4817393255.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/pfeffer_leadership_bs.pdfIn PDF document text
    • http://fiforeru.atwebpages.com/49518630455.pdfIn PDF document text
    • http://webubekesivamuf.epizy.com/extrapolate_data_google_sheet.pdfIn PDF document text
    • http://nabaxaroxofujo.epizy.com/what_is_florida_covid_19_rules.pdfIn PDF document text
    • http://xofududegotu.epizy.com/kadusidukutereze.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/amcor_portable_air_conditioner_plm14000e.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/coshh_risk_assessment_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/how_to_replace_moen_cartridge_kitchen_faucet.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/11330504916.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_off0000d5b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B2 4960 bytes
SHA-256: 3f7eb17f7ea64a7b478eaf29e680d83a95dadb4514a9d485f879160f39d0ccc3
font_01_sfnt_off0000e6a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A1 10920 bytes
SHA-256: 8caeedaab11408f58ce2711620552c7d3aae696aa40a6418ccd5c5c4ad86726f
font_02_sfnt_off00010bdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BDD 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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