Malicious PDF — malware analysis report

Static analysis result for SHA-256 04403b2f07f9f3a5…

MALICIOUS

PDF

67.2 KB Created: 2021-04-04 05:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 140a5c9a2ea1bacd5f79324633b1e938 SHA-1: aa0b90e9b25c02a5e83b813b88c8abf8e2c346e9 SHA-256: 04403b2f07f9f3a56aa79c498de57bae0a1b3d2e8440d3036ee5f29b6b566542
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest an attempt to download a secondary payload or redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/123?utm_term=approaches+to+psychology+6th+edition+pdf PDF link annotation
    • https://cdn.sqhk.co/wejagamewo/idOuTbW/37305559423.pdfIn PDF document text
    • https://cdn.sqhk.co/xonarewu/eiiORhc/amazing_world_gumball_penny.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/ghLiijb/t_rex_chrome_dino_game_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/taxodisilif/exDiiJu/pepujuxo.pdfIn PDF document text
    • https://cdn.sqhk.co/mevazasid/JpXKaii/nike_outlet_near_me_sale.pdfIn PDF document text
    • http://suzenax.22web.org/cash_flow_statement_format_direct_method.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/zomuzigo/xozebewisibizi.pdfIn PDF document text
    • http://litopuputorer.rf.gd/what_to_get_your_godparents_for_christmas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a18092c-d236-4039-b4ab-8f8bf864ac12/sig_sauer_p229_legion_10_round_magazine.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/businessman_telugu_movie_audio_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f4506bf-d02c-4eb4-addc-e3f5cf58425e/nfpa_1001_course_edmonton.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/jututulomuzob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4ce75d7-bbc4-4a81-acac-69efd8a5e845/vivuwowaketusofigusalu.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/jisebum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35511715-7689-4e33-91ba-8c5701e49892/how_do_i_write_a_biography_about_myself_example.pdfIn PDF document text
    • http://puzuniposodaf.epizy.com/comment_crer_une_page_html.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76941657-9875-429e-98bd-67f964f8d54b/zatanevojipibezed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24c7abdc-ceee-4f01-a93c-c81e9b9980da/witopotipamaribofanowi.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_off0000c753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC753 5664 bytes
SHA-256: 051807116bbdd352d6c9229b554efbf178e63fb5685b953a038eab583f66107f
font_01_sfnt_off0000da98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA98 10472 bytes
SHA-256: 04dd17cd712ceadc22ea479669337c274a5bd2639e27f76a97c8a3548377f52d

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