Malicious PDF — malware analysis report

Static analysis result for SHA-256 1035f57087fef113…

MALICIOUS

PDF

63.9 KB Created: 2021-02-13 00:12:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 14ca300c3e5de12cd116c5af10ea974d SHA-1: 13a5300e85ad38fda1838934f8583902abe87596 SHA-256: 1035f57087fef1132221d43c08d80e5b6479f764e6ea7b7c51482056439e5d67
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded link that redirects to a known malicious domain, suggesting a phishing or malware distribution attempt. The presence of a PDF redirector link and the overall classification strongly point towards a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/123?utm_term=how+to+pronounce+phoebe In PDF document text
    • https://cdn.sqhk.co/veletafi/ghyEhhi/jovugupagidotufip.pdfIn PDF document text
    • http://sidanixom.22web.org/adda_247_apk_free.pdfIn PDF document text
    • https://cdn.sqhk.co/jidelugob/gcNkPji/10823519206.pdfIn PDF document text
    • https://cdn.sqhk.co/xisofofumew/dijighb/bubble_tea_emoji_stickers.pdfIn PDF document text
    • https://cdn.sqhk.co/divojimo/ijgjjif/the_room_movie_trailer_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/fowurona/q9jchbe/57755828016.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/lakadutof/dadimujekukuwuwojekes.pdfIn PDF document text
    • http://ninesunugata.epizy.com/8254423601.pdfIn PDF document text
    • http://dogufisojorosef.epizy.com/production_possibilities_curve_frontier_worksheet_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/cisco_3750_x_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/5390434068.pdfIn PDF document text
    • http://pikuvideposem.epizy.com/analyzing_editorial_cartoons_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/coderush_custom_templates.pdfIn PDF document text
    • http://pamemoroza.epizy.com/chrome_extensions_settings_android.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/zexumuwirevolobuvaxamadod.pdfIn PDF document text
    • http://resuzebapaluga.rf.gd/muminovitixufu.pdfIn PDF document text
    • http://rarezutawuwelam.epizy.com/zimoxugeluretisutofawiwu.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/sojeg.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/22080959713.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_off0000bdc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDC1 4796 bytes
SHA-256: 8571a6ea13733a48678cc83b834f586b1179af9586ed475aca27175bac72fd6d
font_01_sfnt_off0000ce19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE19 10696 bytes
SHA-256: 1d4ebe14017d4758451e2179c2ad3140e6711501a2a4f5b18632ee801ba2f992

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