Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b9fed7e2abc882c…

MALICIOUS

PDF

73.9 KB Created: 2021-02-22 13:14:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 547f40c1d3db90c41b55ebdac34c4793 SHA-1: 2a10388b84c278a4f698cadb0039654ca2d7e18a SHA-256: 0b9fed7e2abc882c429e0fb361cb1e2388b70489a3b15f1af9ca23a920107d60
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/aws?utm_term=how+to+pass+rn+nclex+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4463277/normal_601280e05cfbb.pdfIn PDF document text
    • https://vumizopefi.weebly.com/uploads/1/3/5/3/135313358/nasokaxewamu-giliwamid-vozipu.pdfIn PDF document text
    • https://dezusopivelisuk.weebly.com/uploads/1/3/4/7/134734284/xekimaredujugugamog.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/5762464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418185/normal_60242b528141e.pdfIn PDF document text
    • http://milesnires.xyz/gothic_calligraphy_font_freej4ghr.pdfIn PDF document text
    • http://fionainthefield.org/insurgency_sandstorm_pc_size0d27x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465142/normal_6018ad8ac5898.pdfIn PDF document text
    • https://donimafu.weebly.com/uploads/1/3/5/3/135395233/gezavake_sazak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_60289dcc5bcc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451221/normal_602ed58b59aab.pdfIn PDF document text
    • https://wuletalevuvefam.weebly.com/uploads/1/3/1/3/131379877/a9e6066b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jojisoxig.epizy.com/phases_eclipses_and_tides_worksheet_key.pdfIn PDF document text
    • http://mabagojovas.epizy.com/fekobunojagojotazam.pdfIn PDF document text
    • http://bufivuz.rf.gd/figurative_language_worksheet_grade_3.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_off0000e2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CB 5324 bytes
SHA-256: 4325c40d1ae41b12731a0a481d84f10db2888bc8e32132b5edaf9a8554c9be09
font_01_sfnt_off0000f506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF506 11200 bytes
SHA-256: ffe52207ffb3c4d6e608dc0560c52c3b49fae1dbe7bcf14a77619d09b59271f5

Open this report in the interactive analyzer, or submit your own file for analysis.