Malicious PDF — malware analysis report

Static analysis result for SHA-256 5908d379716f8ce8…

MALICIOUS

PDF

72.0 KB Created: 2021-02-20 12:52:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dbc0cf5293dc07fa4b7ba61cd1bcbdb8 SHA-1: 2258513ea70f545936a7cf6844d9837bbc2dc408 SHA-256: 5908d379716f8ce8005c63b11a000d0c5393bf8224b0445a9f99e85f854ca834
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://bologen.ru/wix?keyword=working+model+v8+engine PDF link annotation
    • http://qrettalq.online/can_must_have_to_worksheetvv2h0.pdfIn PDF document text
    • http://pakisonuzaruwav.iblogger.org/delaware_county_ohio_auditor_forms.pdfIn PDF document text
    • http://amst-watch-v1.club/average_starting_salary_international_business_majorvxnzq.pdfIn PDF document text
    • http://sodamasagu.66ghz.com/dictionary_use_practice_worksheets.pdfIn PDF document text
    • http://xajaweronasuxo.22web.org/boerse_bz_filme_en.pdfIn PDF document text
    • http://itactical.xyz/lufifukizexotinuduwitug6e91j.pdfIn PDF document text
    • http://counterman.ru/wapiregakalekx8e9j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497395/normal_60086b8f485a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443803/normal_6013bf6959555.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/ballinger_family_dentistryd2qms.pdfIn PDF document text
    • http://vnds-super.space/barron_writing_for_the_ielts_free_download3ydw3.pdfIn PDF document text
    • https://dixufewopirar.weebly.com/uploads/1/3/0/7/130775961/lofafenazibukatos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wupubobetob.epizy.com/tommee_tippee_bottle_maker_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/free_powerpoint_and_google_slides_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/angielski_b1_b2.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/bowmasters_diamond_membership_hack_apk.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_off0000ddf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF3 5088 bytes
SHA-256: ff451c24074a8d91876e6bee94f32a1acd3f5c2f51895ced65167126d67d60ed
font_01_sfnt_off0000ef42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF42 10508 bytes
SHA-256: 981d2ef8c9bc88b1a45b5914e899112fbe6e3b39fabba0e90802841ff61ddb3f