Malicious PDF — malware analysis report

Static analysis result for SHA-256 2346dbf10a3f7c4e…

MALICIOUS

PDF

72.5 KB Created: 2021-02-12 21:58:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3f17e3423447ccb4c47b004baa060f47 SHA-1: 6f41aeb5c8df4ce03d95a436dd6692e0a03fb599 SHA-256: 2346dbf10a3f7c4e0f8d2d30517b3032fd6e335967c2e013c1d5a7c6de83afd0
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/wix?keyword=registered+maine+guide+patch In PDF document text
    • https://static.s123-cdn-static.com/uploads/4465255/normal_6005e6d288651.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/jajbDgh/lep_s_world_2_download_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502698/normal_5fd1fc9a716fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500187/normal_601f14368dfaa.pdfIn PDF document text
    • http://itclick.info/38257756153lfwkf.pdfIn PDF document text
    • http://websecurer.tech/16484029732b33xv.pdfIn PDF document text
    • http://tovelksa.website/57891530985bbvww.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388412/normal_60090b87a2d65.pdfIn PDF document text
    • https://cdn.sqhk.co/mugukawi/jdxid0X/life_after_death_in_hinduism_in_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/BVicBgh/mercantilism_historical_examples.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401555/normal_5ffd5324457c3.pdfIn PDF document text
    • https://cdn.sqhk.co/kolokejo/he98ihb/merge_farm_level_30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374951/normal_600ce3c00b6ce.pdfIn PDF document text
    • https://bilemupu.weebly.com/uploads/1/3/4/6/134654663/bodaduvolagexobul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443341/normal_5fc78cfd934db.pdfIn PDF document text
    • http://liko-sneakers.com/code_course_4_stage_10_answersfpuq1.pdfIn PDF document text
    • http://auth02mobility.com/lewadibtbx7.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_off0000de1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1E 5460 bytes
SHA-256: 646b3230e1e5bfa831147131678bbddb3176419143504dcb4f768b433a849fbd
font_01_sfnt_off0000f08c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08C 10804 bytes
SHA-256: 9ae0b9759b63ca3fbab5d8b9e16d8819eed4048c3a942b143dd09b46e665eb0d

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