Malicious PDF — malware analysis report

Static analysis result for SHA-256 b12b01806721a92d…

MALICIOUS

PDF

59.7 KB Created: 2021-01-21 12:04:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1c2108240cb1dbc3ef9c688c06748ac7 SHA-1: a4dd5d68fa5dc3326ebe424900a4c866cab95a54 SHA-256: b12b01806721a92d7e9eed300b609b1c71bbe254ecdafe01b6bd54d6453f7a36
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/123?utm_term=imperial+armour+volume+13+pdf PDF link annotation
    • https://cdn.sqhk.co/nebemina/jCaILhc/cooking_madness_a_chef_s_restaurant_games_hack.pdfIn PDF document text
    • http://gebomomeza.22web.org/basic_of_microsoft_office.pdfIn PDF document text
    • http://nevogixire.22web.org/josomakojajuzadu.pdfIn PDF document text
    • https://cdn.sqhk.co/noruwotil/g1Aicpp/94202841599.pdfIn PDF document text
    • http://kepojitu.22web.org/nys_heap_program_income_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/wudawagirus/eFggjcn/nezonaloju.pdfIn PDF document text
    • http://bobiruropiles.22web.org/31950398057.pdfIn PDF document text
    • http://vesimawamom.66ghz.com/buwojorag.pdfIn PDF document text
    • https://site-1204510.mozfiles.com/files/1204510/paris_metro_map_zones.pdfIn PDF document text
    • https://cdn.sqhk.co/disumuneriva/eoihlih/wafofezefikuposex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tikikenuf.epizy.com/guidepost_growth_equity.pdfIn PDF document text
    • http://dipomik.epizy.com/preterite_vs_imperfect_worksheet_with_answers.pdfIn PDF document text
    • http://didaduxazej.epizy.com/kemusowonomigujadevedeti.pdfIn PDF document text
    • http://zalezir.epizy.com/nhs_pension_retirement_application_form.pdfIn PDF document text
    • http://bikikifuxax.epizy.com/android_games_controller_support_list.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_off0000b297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB297 5224 bytes
SHA-256: 9bd1d6e98c63ce4c77ba1ed4d3bbef170048a699082a3a66f1e0e563b393eba3
font_01_sfnt_off0000c453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC453 8780 bytes
SHA-256: 3b33ad95f3dc807ffd046692ff3e60801ffee11f9603ca2c2a5089070a96319f