Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b9d7dbebc58ed30…

MALICIOUS

PDF

78.7 KB Created: 2021-01-27 06:10:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 73293d67d512e05a4cdfd0431918930a SHA-1: 49b7ab7c081cc2a5ce2a6ae33647b5c8ccf1693c SHA-256: 9b9d7dbebc58ed30d865b1b79ff23b1a1add1adb911a73dc2641697aa075a50e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/123?utm_term=k.f.+breene+read+online PDF link annotation
    • http://zoosalon.org/air_hockey_profi_tischz17sz.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/R9Thdgc/seattle_bus_rush_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/denobafopum/ao13iar/49415430524.pdfIn PDF document text
    • http://weareanonymous.org/panzer_marshal_tutorial73daw.pdfIn PDF document text
    • https://bezigetomesijag.weebly.com/uploads/1/3/1/0/131070469/xanegoduv-sujowuduburoda-jelenulor-sikedatax.pdfIn PDF document text
    • http://berozava.iblogger.org/codehs_javascript_functions_and_parameters_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/numiwufeguv/iYPAicd/63409864155.pdfIn PDF document text
    • http://bupetud.xyz/scorestream_high_school_basketball_court_dimensionsklwar.pdfIn PDF document text
    • https://sisuwajad.weebly.com/uploads/1/3/0/8/130874073/1afb864d02cf8.pdfIn PDF document text
    • https://cdn.sqhk.co/kapimetavis/vk6ijhd/deliveroo_rider_ios_app.pdfIn PDF document text
    • http://peskomment.ru/austin_st_john_pornaupr2.pdfIn PDF document text
    • https://xobawaxotax.weebly.com/uploads/1/3/1/4/131453143/nixixidijaxalad.pdfIn PDF document text
    • http://donenebexoxisik.22web.org/ardas_kra_punjabi_song.pdfIn PDF document text
    • https://vejupurujiku.weebly.com/uploads/1/3/1/6/131606174/ef6cbdbcb2.pdfIn PDF document text
    • https://labelamujevodit.weebly.com/uploads/1/3/1/6/131606697/bujuvuzotipu.pdfIn PDF document text
    • https://cdn.sqhk.co/noxuwitide/jcLijgh/mix_all_colors_to_make_black.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sabenimuzu.rf.gd/uga_bulletin_instructions_and_worksheet.pdfIn PDF document text
    • http://zalezir.epizy.com/cabbage_growing_in_kenya.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_off0000f7c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C4 4864 bytes
SHA-256: f12bd392c7cb9abdbea7067fbd5e6a538f47420be3ef769c339bd4249f1fa13f
font_01_sfnt_off00010864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10864 10960 bytes
SHA-256: df49e58f0d638f2310b065ca53ff90bdc239efb199f74904474aad98f7a134a8