Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be20301f4868738…

MALICIOUS

PDF

79.9 KB Created: 2021-05-10 08:58:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: e640deb7a1c54fa4c50e208420dc0e20 SHA-1: 2e2a1c453bedc5e470373bc365ebd9f83287080c SHA-256: 0be20301f4868738dc6b02b7a52683df2f6d83eba33382687f1b030bb36e3d57
126 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs, with one prominent URL pointing to 'soxebez.ru', suggesting a phishing or scam lure related to 'Philips norelco aquatec charger'. The document body is heavily obfuscated, but the presence of external links and the overall detection profile strongly suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/strik?utm_term=philips+norelco+aquatec+charger PDF link annotation
    • http://lightly.store/48647149073iokh1.pdfIn PDF document text
    • http://xejitifuwoligaf.mypressonline.com/wibajigalorugawominulik.pdfIn PDF document text
    • http://bawazofo.getenjoyment.net/virtual_lab_the_cell_cycle_and_cancer.pdfIn PDF document text
    • http://raifaisentapp.online/how_long_should_you_keep_thermometer_in_mouthvyjt7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c5c9786-9141-4efb-b241-d5728c7fa08d/1998_polaris_sportsman_400_4x4_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c17e0dc7-e1d1-4c2c-ace1-24f118a6d6c4/77281328093.pdfIn PDF document text
    • http://bexovivuvere.myartsonline.com/wufuxaxipuweba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a86890f3-0423-4b39-93cb-18843297431e/how_to_write_a_formal_letter_ireland.pdfIn PDF document text
    • http://pigutun.myartsonline.com/dodedujutokumixub.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/bmw_f30_automatic_or_manual.pdfIn PDF document text
    • http://davofunup.onlinewebshop.net/kajokoganetumigedazixos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39a26fef-d3af-44b0-8e97-c1b50f02457c/42929416678.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/human_circulatory_system_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3e8b413-41ea-46b2-b383-99a2e0d58d84/28438550819.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/php_foreach_html_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/how_do_i_calibrate_my_taylor_digital_scale.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/cal_king_bed_sheet_sets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4904107-8b5e-4c3c-a1de-aa6cecabcc33/45726708823.pdfIn PDF document text
    • http://rodisasedozax.myartsonline.com/how_much_is_susan_st_james_worth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f63c5b1a-0903-46b2-a645-05453e7b550a/lg_fridge_craft_ice_maker_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/568e36c9-f388-4bb7-b78b-9bfaebd9e516/1650241403.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_off0000fa33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA33 5320 bytes
SHA-256: 49358c37adcfe38967f4cf78057cda30613422b065b6e458d5d89fba9a22e30d
font_01_sfnt_off00010c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C43 11272 bytes
SHA-256: bb4c404d192134a82cd42b26503e8a22fef0f8e4a00905ee49cd08c139073c93