Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdfc195327b2048e…

MALICIOUS

PDF

77.5 KB Created: 2021-02-24 16:46:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0048b15c8460fa80cee9e364f75dc816 SHA-1: 2f005c239a189b7b7d8a01bb292a5f45174233b1 SHA-256: bdfc195327b2048e32e413036ae2a5f4f41e8ee7fd007a30ce8240f1ac33a45c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/aws?utm_term=best+books+for+young+adults+male PDF link annotation
    • http://ziwixan.iblogger.org/karuppasamy_songs_wapwon.pdfIn PDF document text
    • http://telewapor.22web.org/ct_1040x_instructions_2016.pdfIn PDF document text
    • http://nizezoxizo.22web.org/historically_which_of_the_following_has_the_aicpa_been_most_concerned_with_providing.pdfIn PDF document text
    • http://fezuzegipolekom.iblogger.org/how_do_you_calculate_residual_value_in_accounting.pdfIn PDF document text
    • https://falopizesolirod.weebly.com/uploads/1/3/1/3/131379111/29355.pdfIn PDF document text
    • http://pafekusiwajida.66ghz.com/76264143632.pdfIn PDF document text
    • https://mafekesajivirik.weebly.com/uploads/1/3/4/3/134381466/1ad83b61090e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kajopulijus.epizy.com/seagate_blackarmor_discovery_tool.pdfIn PDF document text
    • http://suvofaga.rf.gd/67686143910.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/install_apk_using_adb_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/brute_noun_form.pdfIn PDF document text
    • http://toxiramagelovit.epizy.com/how_to_work_out_angle_measurement.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/66603923356.pdfIn PDF document text
    • http://mujedofagogi.epizy.com/algebraic_identities_with_proof.pdfIn PDF document text
    • http://kasisexa.rf.gd/55682735818.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_off0000f0fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FA 5580 bytes
SHA-256: a34b437a5a7d52d43830ab0a0981ef24fb2696e0097b5c91caae1b854c573fbd
font_01_sfnt_off000103f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103F0 10980 bytes
SHA-256: 16443928793570320153b0e11b076a6052520b04654c6b55813d3b628121cbee