Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd2205195b403cba…

MALICIOUS

PDF

90.7 KB Created: 2021-04-26 09:56:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cbd4c819a3e481a75158d74acb3ac1b SHA-1: 74acd7af4b2db5d3a8fd9b5081bfa3e98fa2eea5 SHA-256: dd2205195b403cba370982c248a685a4f4dd8eec13e2e9522c39f49728401b21
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure, presenting a search query to direct the user to the malicious URL. No scripts were extracted, but the presence of the malicious URI is a high-priority indicator.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jumiwimov.ru/strik?utm_term=do+i+need+a+licence+for+baofeng+uv+5r
    • http://hushseo.online/lost_and_found_at_school_book_activities8zrmh.pdf
    • http://helplnstagramcontact6088757.com/423207385510xpuj.pdf
    • http://deemonatrafik.xyz/diary_of_a_drug_fiend_kindle7qk15.pdf
    • http://erogan-encolumbia.site/nix_8_inch_usb_digital_photo_frameexnrz.pdf
    • http://biweten.22web.org/56621950203.pdf
    • http://idealica-it.website/digimon_cyber_sleuth_digimon_field_guidewnpel.pdf
    • https://cdn.sqhk.co/nikapeke/dvnhbjb/24258685334.pdf
    • http://opensalle.xyz/739384624574qv8e.pdf
    • http://sendgrid-de.com/linked_list_algorithm_in_ce78tm.pdf
    • https://cdn.sqhk.co/gitogozune/haheghi/posopulupamibewutalojes.pdf
    • http://christinaanddavid2019.com/zozitukoponuwijejosabimotcah3b.pdf
    • http://plafond.xyz/mowir74n79.pdf
    • https://cdn.sqhk.co/gojinuma/IzhfV6P/ice_cream_maker_target_in_store.pdf
    • http://jumazuke.iblogger.org/hazard_identification_report_example.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vujipuxi.epizy.com/tata_bluescope_sheet_size.pdf
    • https://uploads.strikinglycdn.com/files/6d583f56-89b8-4002-b341-3949f582c8f1/gejonumoxusuj.pdf
    • https://uploads.strikinglycdn.com/files/a861bb27-c065-4393-b259-f7654c8ac46b/wapunakeduxo.pdf
    • http://lanikudawojag.rf.gd/buwuzodu.pdf
    • https://uploads.strikinglycdn.com/files/d19b8bee-b9ef-454c-93bc-65413f300b1f/38844037180.pdf
    • http://wixobemiberug.epizy.com/cucumber_face_mask_sheet.pdf
    • https://uploads.strikinglycdn.com/files/2ac3448e-925b-468a-9ed8-074fb3322b51/pillars_of_the_earth_sequel.pdf
    • https://uploads.strikinglycdn.com/files/ab506c32-8146-4abe-b926-e77d431f59ee/importance_of_value_education_in_our_life_wikipedia.pdf
    • http://pevudavef.rf.gd/97732509066.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_off0001234e.bin
72852acd3f2268d542bc40e05d80d7fa52ea679885ea350f8ded7250dfd42745
pdf-font-stream PDF embedded font (sfnt) at offset 0x1234E 5336 bytes
font_01_sfnt_off00013592.bin
03d282c9784f8cc4bb5e9e5e6f1ac4230ad84c02b0c16c1fa5857c7ebd202558
pdf-font-stream PDF embedded font (sfnt) at offset 0x13592 11688 bytes