Malicious PDF — malware analysis report

Static analysis result for SHA-256 866fc8e1bcd7595b…

MALICIOUS

PDF

69.1 KB Created: 2021-03-04 19:09:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4d4b58a0c944bddc7d56172165be3f62 SHA-1: 26be4d308b295c9c146f6a89393e465a8dd32383 SHA-256: 866fc8e1bcd7595b981f3e6257313ed5e285a682aa1f3be60c3acfab7ce7067b
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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.
  • 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://dafemum.ru/award?keyword=gecko+spa+pack+flo+error In PDF document text
    • http://silkhfig.bid/189537132715lg1l.pdfIn PDF document text
    • http://firstdoctor.xyz/advanced_excel_myanmar3swkc.pdfIn PDF document text
    • https://felogenapugiro.weebly.com/uploads/1/3/5/3/135327705/lisuso.pdfIn PDF document text
    • https://vusowixaxepuw.weebly.com/uploads/1/3/1/3/131381533/5bad9caf59b22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502245/normal_5fffe4480e1d9.pdfIn PDF document text
    • https://gadetuzajuvi.weebly.com/uploads/1/3/4/8/134850054/bufewelaxa_sudaf_mutezek.pdfIn PDF document text
    • https://jumirugefof.weebly.com/uploads/1/3/3/9/133997886/5040683.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420431/normal_5fe0eda43b2b2.pdfIn PDF document text
    • https://rawoxozuk.weebly.com/uploads/1/3/2/6/132695352/92121.pdfIn PDF document text
    • https://cdn.sqhk.co/wofunukasu/hhhcgc5/the_horror_heart_of_darkness_traduzione.pdfIn PDF document text
    • https://fidedelab.weebly.com/uploads/1/3/4/0/134096197/ea497ed2.pdfIn PDF document text
    • http://magnetfix.store/michael_burry_net_worth_200898rax.pdfIn PDF document text
    • https://wejerimaz.weebly.com/uploads/1/3/4/6/134648800/2818668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401714/normal_60289245bb165.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463565/normal_602f1bce6df79.pdfIn PDF document text
    • https://cdn.sqhk.co/gebemiwisero/cgdwTsV/88687090436.pdfIn PDF document text
    • https://cdn.sqhk.co/velujuvaxal/qgjpIic/where_we_go_pink_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/hjijheb/gugepugi.pdfIn PDF document text
    • https://cdn.sqhk.co/visesefider/Q4ghjh6/rayman_jungle_run_ios_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/ejg7FMy/zapabawude.pdfIn PDF document text
    • http://www19216801.site/fazubamera9h9.pdfIn PDF document text
    • https://pasadotofeb.weebly.com/uploads/1/3/1/4/131482919/d9e153c1f15cc4.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/IkeWich/who_dies_in_the_100_season_7.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/8545659.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d30a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30A 5104 bytes
SHA-256: ecb73a6bf9f169fa35a01a7343e43c074986c2892b9496d970369d3f186ea09a
font_01_sfnt_off0000e485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE485 10152 bytes
SHA-256: a533724d5e87fd9e04ab32c0ab307cd9ef8b6e429a797d1abf846e8a77ac7073