Malicious PDF — malware analysis report

Static analysis result for SHA-256 804f8c18087ea17b…

MALICIOUS

PDF

78.6 KB Created: 2021-02-23 18:59:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0a87341b51b184ebfbbe224947579148 SHA-1: cf4121eba82804c775248f3d4aa576cd1509193d SHA-256: 804f8c18087ea17b8c46775449ae391350056d45d3933e6b49caa87357eb43ef
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 search query for 'pretty little liars season 1 episode 10 free'. This URL, https://jacksth.ru/wb?keyword=pretty%20little%20liars%20season%201%20episode%2010%20free, is flagged as suspicious and likely serves as a lure to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

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://jacksth.ru/wb?keyword=pretty%20little%20liars%20season%201%20episode%2010%20free PDF link annotation
    • https://cdn.sqhk.co/vawapisoxe/9ridhdo/pilot_logbook_excel_template_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489052/normal_5fd94b24941ab.pdfIn PDF document text
    • https://cdn.sqhk.co/manowipete/gfHSGBW/bubujabakozis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495413/normal_60201a1dd735e.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/ihhbifB/oscar_de_la_hoya_vs_mayweather_2.pdfIn PDF document text
    • https://cdn.sqhk.co/doxanusubomo/pzjgjje/fodavaz.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/wopari/garfield_1_tamil_movie_full_movie.pdfIn PDF document text
    • http://gabixemi.epizy.com/servicenow_fulfiller_report.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/75341394753.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/42462871273.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/voromiroguragapexigega.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/yahoo_fantasy_football_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/atf_box_usb_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/67709587294.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/56478373090.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/child_and_adolescent_mental_health.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/free_jazz_blues_songs.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_off0000ea38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA38 5120 bytes
SHA-256: e583cd9c72d74dfc017cc361508588ceb18754cda02f1410a4c4539e240f9372
font_01_sfnt_off0000fbb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB4 10408 bytes
SHA-256: 43c45e10bd6ec8a9c9d364953b4c04c4c95d37f5fa69244de9c1ded298020b0f
font_02_sfnt_off00011f38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F38 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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