Malicious PDF — malware analysis report

Static analysis result for SHA-256 2810772a2a830190…

MALICIOUS

PDF

69.8 KB Created: 2021-02-09 18:10:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9926eb59f650778bdbeb29805ca88612 SHA-1: 8a45d3e8406c6982f33fd4ee287a079e93801012 SHA-256: 2810772a2a830190cd59edc1a885d7c5df186feaf323fb84d5a7a2f845844244
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://crophysi.ru/aws?utm_term=hollywood+movie++hd+popcorn In PDF document text
    • http://daimontimur.org/tyndall_federal_credit_union_mobile_alqp7rk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423714/normal_5fd77cea78459.pdfIn PDF document text
    • https://zuzumapi.weebly.com/uploads/1/3/4/3/134344149/9396831.pdfIn PDF document text
    • http://naturalgood.space/wizilivisukuraftnxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450249/normal_5fc6839626194.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456114/normal_5ffd826bb5c97.pdfIn PDF document text
    • https://zeteleginogegop.weebly.com/uploads/1/3/4/5/134526156/xojalifo-pagazorumezowe-rimoxojanagebe-zejegug.pdfIn PDF document text
    • http://uablog.site/lowatemekidimajuzoruvuyeufx.pdfIn PDF document text
    • http://businessmentality.com/minecraft_mods_1._16._3_lucky_blocka3uou.pdfIn PDF document text
    • http://storeplus.pro/chromecast_user_guide3dzkg.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/hjibji9/ombre_dip_powder_short_nails.pdfIn PDF document text
    • https://nagejezesalu.weebly.com/uploads/1/3/0/8/130874580/domesekafaxedox.pdfIn PDF document text
    • http://esagafow.fun/phoenix_suns_girl_videoh2wsf.pdfIn PDF document text
    • http://winoorama.website/4095796209070i8k.pdfIn PDF document text
    • http://lifegirls.site/bhangra_in_pain_punjabi_videosijnk.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_off0000d5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CC 5140 bytes
SHA-256: 9e9d057202df8df168aa91c9735af2ebd0295a9c15f9393296b7081496164ab1
font_01_sfnt_off0000e73b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73B 10460 bytes
SHA-256: e5f1892dc35d8bd49a0087d79fbc148dc68a147860fa927b7076ddac2d4ce2c4