Malicious PDF — malware analysis report

Static analysis result for SHA-256 72c08004d5bfe491…

MALICIOUS

PDF

70.9 KB Created: 2021-03-01 15:09:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b9de1c577cd076ba00ae8acb4fc928fa SHA-1: a99c99633a928b26459fe8a67c3112ad6792e8f8 SHA-256: 72c08004d5bfe491cc46391f2c6184712766ab922766cc09053c8bd2bba57758
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://jacksth.ru/award?keyword=4.3+mercruiser+carburetor+diagram PDF link annotation
    • https://mufosuxid.weebly.com/uploads/1/3/4/0/134040625/1165097.pdfIn PDF document text
    • http://tejidirexe.mywebcommunity.org/ezgo_workhorse_parts_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/wogefosa/jegi56h/colourful_world_map_print.pdfIn PDF document text
    • https://munulibur.weebly.com/uploads/1/3/4/5/134508804/f4ed7a95c70.pdfIn PDF document text
    • https://gewipilozu.weebly.com/uploads/1/3/0/7/130775211/wusuvexepijudezuxave.pdfIn PDF document text
    • https://kidivine.weebly.com/uploads/1/3/4/5/134576756/8692963.pdfIn PDF document text
    • http://jofifuneku.medianewsonline.com/fantastic_beasts_and_where_to_find_them_characters.pdfIn PDF document text
    • http://sale-siberian-force.online/dd_5e_rulebooks_listy4n92.pdfIn PDF document text
    • http://golden-charm.ru/33214867194qgc1t.pdfIn PDF document text
    • https://cdn.sqhk.co/xedaberetaj/7jdwqhe/masevelavola.pdfIn PDF document text
    • https://vulemozebo.weebly.com/uploads/1/3/4/6/134693025/xafakupodafaroguxuzo.pdfIn PDF document text
    • https://wigabededonekan.weebly.com/uploads/1/3/0/7/130740374/8565451.pdfIn PDF document text
    • http://lukufogud.getenjoyment.net/tim_ferriss_jim_collins_show_notes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bejideba/gluconato_de_calcio_hiperkalemia.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_off0000d051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD051 5556 bytes
SHA-256: ad6ae98893d06a2cf6ff7df97e8e61f87b5281a3509f188c8c444a249a90f5c9
font_01_sfnt_off0000e327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE327 13544 bytes
SHA-256: 0833029624ecf8f4c34ba55c21423aad064f91453d7cb5fed28b5ba33ddeb109