Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb090d1bc14f1a7c…

MALICIOUS

PDF

79.8 KB Created: 2021-03-27 21:45:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 540cdd7df898fc3cb1dba655d4f64091 SHA-1: 0d55dc27746b583b28568bdb19e6142ccb8bd960 SHA-256: eb090d1bc14f1a7ce6a8774e1e303a810bc6a1885cdb5d5064808c7dc87228b1
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The presence of numerous external URIs points to an attempt to redirect the user to malicious content.

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
  • 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.
  • 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://xezojetit.ru/aws?utm_term=panasonic+kx-tgc220e+user+manual PDF link annotation
    • http://moxilekulina.getenjoyment.net/how_to_read_the_air_book_review.pdfIn PDF document text
    • http://gratoraama.website/vapafefuwamizasowq1inf.pdfIn PDF document text
    • http://tubezadobuzaro.66ghz.com/bootstrap_application_form_template_free.pdfIn PDF document text
    • https://gabukoxikala.weebly.com/uploads/1/3/3/9/133997771/winasevelanim_komegupusewowa_parebijo_xomuxotuneg.pdfIn PDF document text
    • https://vofepelatuj.weebly.com/uploads/1/3/4/7/134768647/165685.pdfIn PDF document text
    • https://fezivalolir.weebly.com/uploads/1/3/4/4/134461714/lagimaxeso-wodapadi-dixexeroveki.pdfIn PDF document text
    • https://vejazisiji.weebly.com/uploads/1/3/0/9/130969480/bamawum.pdfIn PDF document text
    • http://sodabisunuk.22web.org/amsterdam_tourist_attractions_map.pdfIn PDF document text
    • http://najisemure.medianewsonline.com/arap_bahar_nedenleri_ve_sonular.pdfIn PDF document text
    • https://gabejopow.weebly.com/uploads/1/3/4/5/134597712/6694696.pdfIn PDF document text
    • http://trackcreditscore.info/a_visit_from_the_goon_squad_charactersoago5.pdfIn PDF document text
    • http://theandyhong.com/bejusupu26lvh.pdfIn PDF document text
    • https://xapefawisago.weebly.com/uploads/1/3/4/7/134771693/wasotiv.pdfIn PDF document text
    • https://dilewujolar.weebly.com/uploads/1/3/5/3/135308995/3852740.pdfIn PDF document text
    • http://rixujewo.getenjoyment.net/videocon_d2h_recharge_plans_list.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jetotajasavesi.atwebpages.com/plant_cell_structure_and_function.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/68869900606.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/playground_marvel_studios_avengers_apk.pdfIn PDF document text
    • http://bojepudadadax.atwebpages.com/vusudomulawodo.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_off0000fa51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA51 5560 bytes
SHA-256: 15474b617cd62b852c099fd443476cf330d3d4a13ea29cc031df69d9e54d69e6
font_01_sfnt_off00010d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D34 10920 bytes
SHA-256: 98f5bd4385f20433125b871a22479c10bff1c726349eb5b7e929c131a31f4e72

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