Malicious PDF — malware analysis report

Static analysis result for SHA-256 1da9bcaf15af877d…

MALICIOUS

PDF

78.9 KB Created: 2021-03-25 17:10:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 3cf2a917b51cdb65c516e77a5cd7cee2 SHA-1: 61289faf71523e01644f80dca00f5eec6346ada2 SHA-256: 1da9bcaf15af877de68277481b1bcbd6e7686abc663e83c5eef6b59dbb9bb996
126 Risk Score

Malware Insights

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

The PDF document contains numerous external URIs, with a primary one pointing to 'lozipotod.ru' disguised as a search result for an ebook. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing or trojan variant. The presence of many links on disposable hosting further suggests a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/award?keyword=renaissance+periodization+ebook+pdf PDF link annotation
    • https://cdn.sqhk.co/masemojenud/Fjfjf5r/agri_haryana_subsidy_form.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/wLiejaT/mavasiwabuwizisoge.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/czMVhoW/gold_ankle_boots_low_heel.pdfIn PDF document text
    • http://neo-tp.ru/44751527660hy16x.pdfIn PDF document text
    • http://reactivaperu-viabcpi.com/60437352205ddl8k.pdfIn PDF document text
    • http://djami.ru/60646469869d8a18.pdfIn PDF document text
    • https://cdn.sqhk.co/xapewiwud/hjdgcDs/lotagedi.pdfIn PDF document text
    • https://cdn.sqhk.co/boxokozofe/jgidIge/roku_secret_menu_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/gidufulelav/VtVjbVn/sprinter_dipstick_tool.pdfIn PDF document text
    • http://testvvd.xyz/english_adjectives_prepositions_exercises2ftle.pdfIn PDF document text
    • http://jobauthor.online/install_android_x86_dual_boot_linuxjth1a.pdfIn PDF document text
    • http://vebilodugisugod.iblogger.org/60363070761.pdfIn PDF document text
    • https://cdn.sqhk.co/fegokirar/vLhcAeY/18271964353.pdfIn PDF document text
    • https://cdn.sqhk.co/viliwogid/Tghhj3G/digital_time_24_hour_clock_worksheets.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zalufebali.rf.gd/alphabetical_order_worksheets_grade_4.pdfIn PDF document text
    • http://tirejazanapo.epizy.com/vunixiliberitakatodol.pdfIn PDF document text
    • http://gugevifuvonavir.epizy.com/cdc_influenza_vis_form.pdfIn PDF document text
    • http://nekobegediru.epizy.com/los_angeles_times_homicide_report_photos.pdfIn PDF document text
    • http://fujaled.epizy.com/what_does_embedded_system_engineer_do.pdfIn PDF document text
    • http://nekaxikafixof.epizy.com/visual_basic_tutorial_for_beginners_with_examples.pdfIn PDF document text
    • http://gejopap.rf.gd/is_the_martingale_strategy_illegal.pdfIn PDF document text
    • http://dukowuvizo.epizy.com/best_stock_for_2021_under_10.pdfIn PDF document text
    • http://pubupamosala.epizy.com/37039947685.pdfIn PDF document text
    • http://dokedajonanumi.rf.gd/26641469515.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_off0000f41a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF41A 5380 bytes
SHA-256: 924055d9a62101353ba62dabd5ebf084a62f6e29859c0831ef0127ee2ce9cbba
font_01_sfnt_off0001067e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1067E 11708 bytes
SHA-256: ed9e2110065cf7d967d9cf9ba8f1e57a5bf40e5fc4b4df191fd8462b90c40b0b

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