Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8f4179a3cf43f12…

MALICIOUS

PDF

74.7 KB Created: 2021-02-02 10:04:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 51df2bdc05f4351276b8c6a8f6ce290a SHA-1: 1399e7552a9899cf66c594a63b408a0c6d444f19 SHA-256: e8f4179a3cf43f12323544794419c9527fffe02b1447f9becfef020e7af2b0f4
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=darling+songs+free++tamil In PDF document text
    • https://torolanomopefi.weebly.com/uploads/1/3/0/7/130739669/pagaput-gunupenezu-sugujakisixamis-kexuzelakun.pdfIn PDF document text
    • https://gupijevud.weebly.com/uploads/1/3/1/4/131407369/jasajajupotum_wibel_vikulorifi.pdfIn PDF document text
    • https://xuxukiworizep.weebly.com/uploads/1/3/4/7/134723333/c39082.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/jvbgje9/microsoft_translator_online.pdfIn PDF document text
    • https://bufofeguwozeder.weebly.com/uploads/1/3/0/7/130775144/bemasexalese_bebediralafixa.pdfIn PDF document text
    • https://daxajofu.weebly.com/uploads/1/3/0/7/130740026/9ec316.pdfIn PDF document text
    • http://selozufuwadapuw.66ghz.com/24834042325.pdfIn PDF document text
    • https://marizezibafive.weebly.com/uploads/1/3/4/8/134865590/7253058.pdfIn PDF document text
    • http://noxezef.iblogger.org/23412311933.pdfIn PDF document text
    • https://romizipomubem.weebly.com/uploads/1/3/0/7/130775952/mufuwosorupoje-punesipep-supudibabugijo-topowizu.pdfIn PDF document text
    • https://woxexawunum.weebly.com/uploads/1/3/0/7/130776255/mirari_gikabita_mavojiwem.pdfIn PDF document text
    • https://joweralifaj.weebly.com/uploads/1/3/4/3/134350132/4c943ae4a9.pdfIn PDF document text
    • https://fetevosave.weebly.com/uploads/1/3/1/4/131438058/5900334.pdfIn PDF document text
    • https://dixozetazexode.weebly.com/uploads/1/3/4/4/134472526/pinetomidepejusabom.pdfIn PDF document text
    • https://niforobufuxir.weebly.com/uploads/1/3/4/5/134512868/8571796.pdfIn PDF document text
    • https://tonituligavu.weebly.com/uploads/1/3/4/8/134884188/3295093.pdfIn PDF document text
    • https://lamosafobe.weebly.com/uploads/1/3/5/3/135322951/kigobivafifeve.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wijinap.rf.gd/iowa_dot_physical_forms.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_off0000e8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CC 5084 bytes
SHA-256: 0de5dcaf3dc002be86c0c55d963a022605d41e0ef11b988e92f0eeec74b764d6
font_01_sfnt_off0000fa0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0A 10568 bytes
SHA-256: 17c11f659fc166fe59f38539f598b952ba35dce433e6772cb284929b12f9e4ed

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