Malicious PDF — malware analysis report

Static analysis result for SHA-256 349c583d15057cf7…

MALICIOUS

PDF

83.6 KB Created: 2021-04-02 05:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c5a3226c535882ed8a8194857e8abfd4 SHA-1: 21a188b3719451ab8f158c5943df2848b7d9e76a SHA-256: 349c583d15057cf7aab6ea2310e7b487b7c47c6f5a4a2536bafe1ea86c637c8a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://bologen.ru/wix?keyword=mo+ghile+mear+pronounce PDF link annotation
    • http://zotuxizuso.iblogger.org/bhilwara_patrika_today.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407988/normal_5fee89922bb1f.pdfIn PDF document text
    • http://paxezimusosesa.scienceontheweb.net/nuevo_diccionario_bblico_certeza.pdfIn PDF document text
    • https://mekapejodefab.weebly.com/uploads/1/3/4/7/134740006/sexebox-fuxukidipitu-doregof-kavorokadaxorut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366397/normal_60496c431aa25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401525/normal_6037898e4ba43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485309/normal_6051e4a5bcb45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384159/normal_5fc7c8aa3c916.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489259/normal_60113011104bd.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/lista_de_verbos_regulares_e_irregulares_en_ingles_y_espaol_conjugados.pdfIn PDF document text
    • http://wubowobipevoto.mywebcommunity.org/61407033390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408586/normal_60215e69a22a0.pdfIn PDF document text
    • http://gepokupaburorew.mywebcommunity.org/gokomivonabajem.pdfIn PDF document text
    • https://vozomazusow.weebly.com/uploads/1/3/4/5/134510153/4849299.pdfIn PDF document text
    • https://fidimamafiw.weebly.com/uploads/1/3/4/6/134624465/7080151.pdfIn PDF document text
    • https://tazifidaron.weebly.com/uploads/1/3/4/9/134901468/jifuwolokol-zukiporavu-makupa-joloramalalit.pdfIn PDF document text
    • http://makukenumeg.22web.org/69708814038.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zobatokuvanoz.epizy.com/80088132334.pdfIn PDF document text
    • http://kubuxakul.epizy.com/16175398184.pdfIn PDF document text
    • https://13adc596-845f-4f4a-b539-e2c04a0a4b5a.filesusr.com/ugd/6e2da7_b31c34ebdc99450a99ed9bb171137e60.pdf?index=trueIn PDF document text
    • http://ridupokibi.epizy.com/54813716855.pdfIn PDF document text
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_460e28a41e694003956d7d9fbde92adc.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E5 5308 bytes
SHA-256: 941bf980e8f2a6bc84bb3ba4eca9784798ebc2c25fddf68d782f0e99eadd8bb1
font_01_sfnt_off00010425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10425 5176 bytes
SHA-256: 46df582a0d098c4e6be0995d7850cb41ea590acd1373f5d949ae7ab5a4b9f5d4
font_02_sfnt_off000115a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115A5 13172 bytes
SHA-256: 6c612e17b5bef0b893a051cce2715b998d6b0477e6216a507be4740a56e5178e

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