Malicious PDF — malware analysis report

Static analysis result for SHA-256 136052d89869ab76…

MALICIOUS

PDF

73.8 KB Created: 2021-02-28 13:41:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 72a0b85a9008ebefc0b6068c10d3fcc7 SHA-1: ad39a006b0071af7969e632240b67913bf7ab640 SHA-256: 136052d89869ab76669fe8e9148f1a3577ea2be430130cbf68941a4f7e59c1bd
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/wb?keyword=karcher%20repair%20centre%20glasgow PDF link annotation
    • https://pogosarixuxa.weebly.com/uploads/1/3/0/7/130776079/679aa07.pdfIn PDF document text
    • https://cdn.sqhk.co/kixituvelil/46Ehcii/at_t_u_verse_modem_reset.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/vocabulary_from_latin_and_greek_roots_unit_2_answer_key.pdfIn PDF document text
    • https://xuzekivaf.weebly.com/uploads/1/3/1/4/131453918/samarinijup-wunetobat-lazuro-lumupukenarasu.pdfIn PDF document text
    • https://xedasijaw.weebly.com/uploads/1/3/1/4/131453620/munovexumi.pdfIn PDF document text
    • https://cdn.sqhk.co/guwewaxa/ie6ShbB/77203068282.pdfIn PDF document text
    • https://cdn.sqhk.co/xumirikebixo/LhcheNg/46926511683.pdfIn PDF document text
    • http://wifunagidoli.mypressonline.com/usmle_step_1_scores_percentile.pdfIn PDF document text
    • https://cdn.sqhk.co/jebixusugak/SjfjeTs/intel_wifi_software_for_windows_7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414153/normal_602b041c4397f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465564/normal_5fe3e333f008e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tulajadulixo.myartsonline.com/what_is_a_certificate_of_readiness_in_divorce.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/quantum_physics_for_dummies_review.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/acer_nitro_5_gaming_laptop_review_gtx_1050.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/akiem_hicks_injury_report.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_off0000e231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE231 5256 bytes
SHA-256: fc774fd576e0ba7bc5c9d05e438dcbd14e02d6ce2d3acb2a8d4241259e18dfc0
font_01_sfnt_off0000f427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF427 11348 bytes
SHA-256: 68ffab24937edec792f5b62e1e82d302602ede80849030e04123eaa00ce4f789