Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b416fbca3392a02…

MALICIOUS

PDF

73.6 KB Created: 2021-03-22 20:21:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58ee818f0d3cf97926e1a35f00cbb37b SHA-1: dc5d4711130dcb8fdd09650ca4812c6326ce1161 SHA-256: 7b416fbca3392a026236d869d87ff32710bf2579aa7f3d5675f4190a031c5413
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 suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest this document is designed to trick users into visiting a malicious site, likely as part of a spearphishing campaign.

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
  • 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://xezojetit.ru/123?utm_term=bogusz%25C3%25B3w+gorce+informacja+turystyczna
    • https://cdn.sqhk.co/tirazirevemu/m69qQZ5/financial_management_report_template_excel.pdf
    • https://cdn.sqhk.co/letopoto/iXAGn6N/3d_ball_balancer_extreme_adventures.pdf
    • https://cdn.sqhk.co/difejekexe/jdq8Whg/nakivimepafuz.pdf
    • https://cdn.sqhk.co/pevelefotuve/hieYzhe/xomujikunirugejexovufi.pdf
    • https://static.s123-cdn-static.com/uploads/4480899/normal_5fe0f499b5fd9.pdf
    • https://cdn.sqhk.co/mitugejaxel/lwLgdqb/syfy_movies_on_amazon_prime.pdf
    • https://cdn.sqhk.co/motuwezelu/ee69nLv/46443859622.pdf
    • https://static.s123-cdn-static.com/uploads/4383801/normal_5fcd659cef184.pdf
    • https://cdn.sqhk.co/fapulatonupe/Qhfjhgd/sonadijajomitiki.pdf
    • https://cdn.sqhk.co/vikojovowoso/h8Nhgha/infection_prevention_jobs_chicago.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tezofuretejom/tea_for_two_cha_cha_sheet_music.pdf
    • https://s3.amazonaws.com/wenobagupexekap/my_beautifier_lyrics_video.pdf
    • https://s3.amazonaws.com/kujesulad/58682256667.pdf
    • https://s3.amazonaws.com/zowejunef/map_of_australia_printable_template.pdf
    • https://s3.amazonaws.com/jusagi/brother_usb_printer_driver_for_android.pdf
    • https://s3.amazonaws.com/loranoduzuja/7915536429.pdf
    • https://s3.amazonaws.com/zonebon/kozajebamugekow.pdf
    • https://s3.amazonaws.com/liluvad/didagoxixofodazasopowud.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfc2.bin
bd63e5d66a6e00faba12a958cd1b19ed69dc5ad413bd8fd51876d46c42f2972c
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC2 5676 bytes
font_01_sfnt_off0000f2e7.bin
a4ea034a383382ee2f812dcd3820faa851cde184437ff8df613b6bcd1ee7dc8d
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E7 11472 bytes