Malicious PDF — malware analysis report

Static analysis result for SHA-256 6485b9e1434eaec3…

MALICIOUS

PDF

72.5 KB Created: 2021-05-01 05:18:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: db9a0eded3d35a9c97a5c5dfcc5062b9 SHA-1: 07f38733ac10fdb9d08eb7e476896a665515931c SHA-256: 6485b9e1434eaec3648adca5d977ff2c251ca31182efb2ab0be4b0282ce64acf
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to contain search-related terms, suggesting a lure.

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://jottigo.ru/strik?utm_term=dymo+letratag+tape+jam PDF link annotation
    • http://fesuzeroba.iblogger.org/agustina_bessa_luis.pdfIn PDF document text
    • https://cdn.sqhk.co/xeloxilava/gcjgjiM/blacksmith_tongs_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/ejgZHgg/52187225210.pdfIn PDF document text
    • https://cdn.sqhk.co/mugapowejog/EFu3ijm/41821271796.pdfIn PDF document text
    • https://cdn.sqhk.co/desiruzag/5MWykjh/referencias_formato_apa_6ta_edicion.pdfIn PDF document text
    • https://cdn.sqhk.co/xasexuwosul/gfXhjMY/poblano_soup_allrecipes.pdfIn PDF document text
    • https://cdn.sqhk.co/simikitivo/ghepHjb/zombieland_saga_sakura.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://satuvet.epizy.com/vigisike.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/duxofemebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc4d586e-3c95-4a85-a3df-88c7ae9d75d1/laxifedejinowexonosuves.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/33067467693.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/hunger_games_chapter_19.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/14678089941.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/infinity_pool_design_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/laraluxe.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/masterbuilt_electric_smoker_turkey_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df010370-f109-4568-bec3-674d6df755bc/92179381363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f372b6-9314-40ef-999d-961a7fee44a2/free_maths_worksheets_for_7-8_year_olds.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/what_is_netflixs_strategy.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_off0000ddbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBF 5140 bytes
SHA-256: f0daef99ad7c20b72420179578545949268359519d8087b612b63b34f341a68d
font_01_sfnt_off0000ef3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3A 10772 bytes
SHA-256: 155587d5f85f409315239de81b7320b8307d322a0d85e62e0c048befba19869d

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