Malicious PDF — malware analysis report

Static analysis result for SHA-256 62a995f672727670…

MALICIOUS

PDF

74.2 KB Created: 2021-01-31 14:56:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: edcdf86e8732d9652ef07106db709333 SHA-1: 8f9ba2284ae3e8b706dcfaac102a49b3f13064de SHA-256: 62a995f6727276703a80a37c3ee842bf757889870d84e5490918a847ef9b10b9
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://druttle.ru/wb?keyword=go%20fish%20online%20shopping PDF link annotation
    • https://gikexirubunos.weebly.com/uploads/1/3/4/6/134644737/f007272673990.pdfIn PDF document text
    • https://xomupufemi.weebly.com/uploads/1/3/4/3/134322732/rafesewurifuzo-dixajexej.pdfIn PDF document text
    • http://instapriz365.online/clue_characters_mrs_whitea20mr.pdfIn PDF document text
    • http://bottlechainworld.com/canape_abatible_yecoly0m4p.pdfIn PDF document text
    • https://fovezifume.weebly.com/uploads/1/3/0/8/130874198/murezox_gigovijifudupux_xuviwururofa.pdfIn PDF document text
    • http://copyright-central-media.com/balance_chemical_equations_worksheet_answer_key26f4z.pdfIn PDF document text
    • https://fofagova.weebly.com/uploads/1/3/4/3/134313529/wuwavutop.pdfIn PDF document text
    • https://bipovubukixepev.weebly.com/uploads/1/3/2/7/132740720/radifodazukob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414689/normal_5fccb3b1e0d5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380854/normal_5fee9dc1bde0f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451542/normal_5ffb700b8d1ee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tufukupetateto.epizy.com/wepuxiferatig.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/que_son_los_armonicos_electricos.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/they_call_me_devil_song.pdfIn PDF document text
    • http://molulig.epizy.com/endless_frontier_pet_guide_2019.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_off0000e756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE756 4888 bytes
SHA-256: 27e604f057945c4b292d123df843b047a99fc62da43880cd738bfcef741ea2cd
font_01_sfnt_off0000f806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF806 10672 bytes
SHA-256: 04565bc11f2c38028c065b10709e6b93ce8a43d4736a6fd82abec4e78dd93cc9