Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbdde8a338679634…

MALICIOUS

PDF

67.5 KB Created: 2021-02-20 10:36:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5745e4f61dc24c0cf4f7a289c260bbcb SHA-1: a2c461ef1dc25dce7b22b65deb0939cdef42bfd0 SHA-256: bbdde8a33867963471f56751e5fef915781af5cd03cc87a90cdd06c93fa350a6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/wix?keyword=himnario+adventista+antiguo+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484618/normal_5fd1e87ba8e0b.pdfIn PDF document text
    • https://rozozejowetape.weebly.com/uploads/1/3/4/5/134510424/zabajote.pdfIn PDF document text
    • http://55571.ru/xedovaka7tf1g.pdfIn PDF document text
    • https://sebinegovana.weebly.com/uploads/1/3/4/0/134095930/84ce5ad4bf6c.pdfIn PDF document text
    • https://vofovolovun.weebly.com/uploads/1/3/1/4/131483423/banusupebixusu.pdfIn PDF document text
    • http://lngcliente.com/a_telugu_movie_tamilrockersw0o4k.pdfIn PDF document text
    • https://lepoboniw.weebly.com/uploads/1/3/0/9/130969744/955536.pdfIn PDF document text
    • https://zuzuxaze.weebly.com/uploads/1/3/4/0/134040629/numifugikukisisuloga.pdfIn PDF document text
    • https://mizunemaki.weebly.com/uploads/1/3/4/8/134850414/389167.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387706/normal_601ec79caad56.pdfIn PDF document text
    • http://instapriz24.online/2.dereceden_denklemler_kolay_testtzyxe.pdfIn PDF document text
    • http://xsale.trade/62397736699l2t14.pdfIn PDF document text
    • http://ses-paypal.com/movies_hd_apk_for_ios1v1gb.pdfIn PDF document text
    • http://newyearshop.site/vefodebejujumetasimb6wpu.pdfIn PDF document text
    • http://interbank.link/pubg_mobile_metro_royalehdns3.pdfIn PDF document text
    • https://batigagonu.weebly.com/uploads/1/3/4/7/134774980/6714486.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_602bde536742e.pdfIn PDF document text
    • http://winfreeiphone.xyz/swing_trading_meaning_malayalamcakxx.pdfIn PDF document text
    • http://azorocheat1.xyz/88534266580382zh.pdfIn PDF document text
    • http://ru-1.casa/4833771789z2df5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488572/normal_5fc593c33d37e.pdfIn PDF document text
    • https://kovepezerolozu.weebly.com/uploads/1/3/1/4/131483153/reredenaju.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_off0000cb2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB2E 5348 bytes
SHA-256: 84ffbf088364b18c80fbf89955cb463711f4b6d90a7aa5abebac4643b471096c
font_01_sfnt_off0000dd4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4B 10776 bytes
SHA-256: 430e561203f1b1c5ef79fb43300300bda058b971f061f7242d1fe575817d8467

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