Malicious PDF — malware analysis report

Static analysis result for SHA-256 97295ca7d724470e…

MALICIOUS

PDF

75.5 KB Created: 2021-02-19 15:24:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cfcc673956b9b153d823fb9bc0211b59 SHA-1: 23ceb9ec2ee25fcdacc3515c32be4927f18682e8 SHA-256: 97295ca7d724470e52484c022f3ecfa838c8f635145c94dc678161004b9a1b3e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jacksth.ru/strik?utm_term=optiplex+755+max+memory PDF link annotation
    • http://prizinsta24.online/why_does_my_whirlpool_washer_leak_waterdv6hu.pdfIn PDF document text
    • http://freedate18.xyz/vugutebesbofq4.pdfIn PDF document text
    • http://spoonnumberone.xyz/moravia_il_disprezzo2mral.pdfIn PDF document text
    • http://jerijoba.iblogger.org/canadian_immigration_form_at_airport.pdfIn PDF document text
    • http://myluckybet.xyz/biology_grade_11_textbook_nelsonq86dk.pdfIn PDF document text
    • http://kuziluzesoga.22web.org/kriteria_diagnosis_sepsis.pdfIn PDF document text
    • http://ogranicbio.space/gi_vn_ht_sheet2nq95.pdfIn PDF document text
    • http://the-glow.ru/five_nights_at_freddy_s_movie_postera3w3s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388407/normal_5fd65076245e0.pdfIn PDF document text
    • http://1xbets-reg.site/christian_songs_free_tamil6c5ve.pdfIn PDF document text
    • http://rte-ita.fun/gerunufenevazavamif4mfx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503987/normal_5fc57bec153d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406789/normal_601c8b01bce9c.pdfIn PDF document text
    • http://mugedly.xyz/chennai_super_kings_team_2020_players_listxp8id.pdfIn PDF document text
    • http://toteganutiv.66ghz.com/55364516128.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446923/normal_6001dd7cf2149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498883/normal_602b0afa6e92d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://medojowibapij.epizy.com/ruxigurukorozevojoduriva.pdfIn PDF document text
    • http://mugekalamiwatek.epizy.com/free_farm_coloring_sheets_for_preschoolers.pdfIn PDF document text
    • http://laropijodozu.epizy.com/badagidodetemolekadepo.pdfIn PDF document text
    • http://fifusudevop.rf.gd/27761620468.pdfIn PDF document text
    • http://guvenup.epizy.com/conceptual_approaches_to_human_ecology.pdfIn PDF document text
    • http://divojeniro.epizy.com/pujimagekilejetatoxitado.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB91 4872 bytes
SHA-256: bfa28c9fe2f0a0a569af29fdf25f44b75b5d111d48f6e57eaf223c83a3221ced
font_01_sfnt_off0000ec35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC35 11568 bytes
SHA-256: 0e1322bdee562388de2afed0d47c2a17bea52f18880beefd93c56db496bbe4ae
font_02_sfnt_off00011246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11246 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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