Malicious PDF — malware analysis report

Static analysis result for SHA-256 e73126142b794231…

MALICIOUS

PDF

71.9 KB Created: 2021-03-02 14:26:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: eefc614b72b79971efc50100183694ef SHA-1: eea508bbfccc3ff32c41445c6f7c36648c0d3b67 SHA-256: e73126142b79423184a9e39be2733a49fc1140dad7208d0d232bb0c54c6ba6a2
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://fokemale.ru/award?keyword=how+to+stop+casio+illuminator+from+beeping+every+hour PDF link annotation
    • https://raromimuzu.weebly.com/uploads/1/3/0/8/130874361/d1bcd75fbfe.pdfIn PDF document text
    • https://fenutirixe.weebly.com/uploads/1/3/4/6/134640366/1f8537fb883.pdfIn PDF document text
    • https://tataberoxem.weebly.com/uploads/1/3/0/8/130874397/3c59de18abee13.pdfIn PDF document text
    • https://vufufibujirefe.weebly.com/uploads/1/3/4/3/134355905/6726551.pdfIn PDF document text
    • https://gojulujowavid.weebly.com/uploads/1/3/4/8/134886085/fifumu.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/how_to_fold_fisher_price_swing.pdfIn PDF document text
    • https://cdn.sqhk.co/jixuvepabu/MsihPCy/32186190144.pdfIn PDF document text
    • https://mokefogo.weebly.com/uploads/1/3/6/0/136086775/5699836.pdfIn PDF document text
    • https://cdn.sqhk.co/bawusipa/dicJyuC/unique_tie_dye_patterns_diy.pdfIn PDF document text
    • https://cdn.sqhk.co/ranetixeba/LiaGhd9/97425436355.pdfIn PDF document text
    • https://lemuvizavo.weebly.com/uploads/1/3/2/6/132682731/xuvate.pdfIn PDF document text
    • https://gefawopunov.weebly.com/uploads/1/3/0/9/130969454/3cd3705b16.pdfIn PDF document text
    • https://cdn.sqhk.co/muluxodipoto/gfLidja/drill_master_18v_nicd_replacement_battery.pdfIn PDF document text
    • https://cdn.sqhk.co/dagosasojo/dnyShio/top_100_pop_hits_this_week.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuvizida.rf.gd/lefozesibujekidenolusifu.pdfIn PDF document text
    • http://pazepoxi.atwebpages.com/gudoguwaniwatimu.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_off0000d993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD993 5784 bytes
SHA-256: d9fb3f8e4924e8723b3c08e0587336cd94c241ecd245d5837dcc27f875563607
font_01_sfnt_off0000ed37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED37 10720 bytes
SHA-256: 601bc7f40a605aba0f3345ba19e81e86f8eaefb37fb525e5ac3dc4258365440f