Malicious PDF — malware analysis report

Static analysis result for SHA-256 b02a594ea1e93cc9…

MALICIOUS

PDF

68.2 KB Created: 2021-02-03 21:09:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1b8e15cca21aabc1b69c43742c6ba3e9 SHA-1: 47969b113f5f767855eb761f5b104f87581e4ee0 SHA-256: b02a594ea1e93cc9a08abe179dd706e5cfd5fbf06f864cd23b9c0d3ff7cfd16c
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://seumenha.ru/wb?keyword=blank%20calendar%20template%202019-%2020 PDF link annotation
    • http://jijimaxugixu.22web.org/types_of_energy_worksheets_6th_grade.pdfIn PDF document text
    • https://titobabedax.weebly.com/uploads/1/3/4/3/134317276/japew.pdfIn PDF document text
    • https://livubefelamujir.weebly.com/uploads/1/3/4/8/134899239/fijutuxan.pdfIn PDF document text
    • http://bubble1.space/motions_of_the_earth_class_6fgfuo.pdfIn PDF document text
    • https://cdn.sqhk.co/botuvawezej/qiehjic/22120866623.pdfIn PDF document text
    • https://tanibabinilez.weebly.com/uploads/1/3/4/0/134018029/merufepub.pdfIn PDF document text
    • http://bilet-pdd.site/solving_equations_with_fractions_and_variables_worksheetsy2b2v.pdfIn PDF document text
    • https://fiwisito.weebly.com/uploads/1/3/4/7/134715438/belekesuloro_zisete_vekutajikedosed_vizoko.pdfIn PDF document text
    • https://zabojipenow.weebly.com/uploads/1/3/1/6/131636987/jesagos.pdfIn PDF document text
    • https://ruweveti.weebly.com/uploads/1/3/1/3/131379789/9f6843d63ef47.pdfIn PDF document text
    • http://mutinujevax.22web.org/79550633921.pdfIn PDF document text
    • https://wufonujixu.weebly.com/uploads/1/3/4/3/134386315/2793093.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://talulof.epizy.com/mugegeferefageluk.pdfIn PDF document text
    • http://jopizegumi.rf.gd/elegie_faure_sheet_music_cello.pdfIn PDF document text
    • http://dusefepov.epizy.com/bulexunakebumif.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_off0000cca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA6 5668 bytes
SHA-256: 8de5f71e82b3539f090d7d426a2bb57345ae5755b84176afbbba12e6198dbd59
font_01_sfnt_off0000dfe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE9 10564 bytes
SHA-256: 53ea3e2d640c3bcf512c737b8c0abcfa5d033d7bda3885371798dacce275fc3c