Malicious PDF — malware analysis report

Static analysis result for SHA-256 11e6ff9908382d74…

MALICIOUS

PDF

72.6 KB Created: 2021-02-21 12:33:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9987646cfa332c6986ac6362976c5a29 SHA-1: 4b79b7ee3419d4b6878d5ec500cbc43956a52a15 SHA-256: 11e6ff9908382d74f5c4740f851365f06c2e61d9a76efcfd469862a32bbcf4c9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=does+texas+roadhouse+have+early+dinner+specials In PDF document text
    • http://pressit.space/four_goals_of_psychology40sqq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446634/normal_5feebac321879.pdfIn PDF document text
    • http://shoop-fl.ru/88858022347ud2hg.pdfIn PDF document text
    • http://aires.fun/genudogekosoqniri.pdfIn PDF document text
    • http://usacreditcheck.info/vba_word_search_and_replace_stringrws3l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380691/normal_5fcf975645122.pdfIn PDF document text
    • http://catsism.com/25606532651lcgxh.pdfIn PDF document text
    • http://topcreditscore.info/livro_adsorop8rue.pdfIn PDF document text
    • http://vvinorama.fun/yeah_baby_whatsapp_videobu06x.pdfIn PDF document text
    • https://tewafegode.weebly.com/uploads/1/3/5/3/135350941/kezafo_dixanem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jusaloxu.epizy.com/canon_pixma_ts3100_driver_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/pobuj.pdfIn PDF document text
    • http://bunisanabasa.epizy.com/xanasogowovipo.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/argano_manuale_a_fune.pdfIn PDF document text
    • http://pidosowot.epizy.com/50434104339.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_off0000db70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB70 5388 bytes
SHA-256: 2354783152759606ee2378a69ab215dd486f553449eacffe2589231ab52739d0
font_01_sfnt_off0000edd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD4 11816 bytes
SHA-256: ed368790b77a49b55048dec25c04240fb55fb4952d3bbf2358792a37668f6019