Malicious PDF — malware analysis report

Static analysis result for SHA-256 580b0192c6a7dacc…

MALICIOUS

PDF

65.0 KB Created: 2021-01-30 13:02:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 843ff6b87e91abf75cde626bbc8af976 SHA-1: 5eaf3a379bf16b9afdcbfcf909ad40563d5ea211 SHA-256: 580b0192c6a7dacc9517fc18c064249a931540c8edb66bc6bc3c55b1190ac001
244 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
  • 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://crophysi.ru/123?utm_term=atascadero+unified+school+district In PDF document text
    • http://emmetrix.net/a_cinderella_story_movie_script342dy.pdfIn PDF document text
    • https://vejarava.weebly.com/uploads/1/3/1/0/131070596/9004442.pdfIn PDF document text
    • http://realnoe-obshenie.online/ragomufinubepusosolothydqi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387699/normal_5ff26a9cdf647.pdfIn PDF document text
    • http://detonic-shop.website/cockcroft_walton_voltage_multiplierp93z5.pdfIn PDF document text
    • https://zovakobazala.weebly.com/uploads/1/3/1/4/131456363/mizobubob.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/cfjjatM/fesukapisakafuf.pdfIn PDF document text
    • http://consumer-data-protection-bureau.com/vovusexilazidovovafimethocmu.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/26375996468e7nhu.pdfIn PDF document text
    • http://help-feedback-amzn3.xyz/cinematography_books_in_tamil_free_download6j2vy.pdfIn PDF document text
    • https://cdn.sqhk.co/ziveluki/qjjG7ic/terujojopakivagusosob.pdfIn PDF document text
    • https://cdn.sqhk.co/xogodapap/ygcXWia/ghost_hunting_game_online.pdfIn PDF document text
    • http://korecos.ru/kinesiology_textbookg5rdo.pdfIn PDF document text
    • http://proita.space/147488250108n1uo.pdfIn PDF document text
    • https://cdn.sqhk.co/tovisegag/haLiggD/direlakegomazazozinuz.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_off0000c422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC422 5100 bytes
SHA-256: ff1ab3b92a262d531842464db7c8f7e94f6bb65250a1d4d0098ecd0a5b35dfec
font_01_sfnt_off0000d573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD573 9844 bytes
SHA-256: eeabac8fe1abf5d7cf7354c49df8d86e74bcc8081bdafdbcef42868d0773925a

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