Malicious PDF — malware analysis report

Static analysis result for SHA-256 b089ff9d7ba52039…

MALICIOUS

PDF

74.0 KB Created: 2021-02-11 16:04:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 056742d48f85c0367c78de3b6aba27e1 SHA-1: 19ccbbae0b5705c109466b97621ec8c952f525bc SHA-256: b089ff9d7ba520398f1e5bc2515cc2bc4cd09507447bb43f2ac790f46e687794
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://yafferge.ru/123?utm_term=the+black+eyed+peas+imma+be+mattybraps In PDF document text
    • https://muxiduxipa.weebly.com/uploads/1/3/5/3/135319221/baferifafam-kevikidesoxalik-ririrukoramira-sefunuxim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402724/normal_601b9a5e72269.pdfIn PDF document text
    • https://jizexukufi.weebly.com/uploads/1/3/4/1/134109318/2246752.pdfIn PDF document text
    • https://tilawifi.weebly.com/uploads/1/3/4/4/134480999/gifinuv.pdfIn PDF document text
    • https://ginozupil.weebly.com/uploads/1/3/1/4/131411281/pozenemozomexa-nelasizetegaruk-bivil.pdfIn PDF document text
    • https://tebadigizowi.weebly.com/uploads/1/3/4/1/134109241/dodiwi.pdfIn PDF document text
    • http://frontend-developer-azaynullin.site/42067909814e5to6.pdfIn PDF document text
    • https://datipozor.weebly.com/uploads/1/3/0/8/130813945/e64b5e08086.pdfIn PDF document text
    • http://izzzaaa.space/download_moana_2016_full_movie_mp40yn7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376101/normal_6007bef0dd714.pdfIn PDF document text
    • http://tehnomaster.net/48934681134s3901.pdfIn PDF document text
    • http://esclick.pro/bridge_commander_mobileqi13a.pdfIn PDF document text
    • https://zibiwatogotoz.weebly.com/uploads/1/3/1/1/131163514/bawulorazuv.pdfIn PDF document text
    • http://fullpisetc.ru/pigukariwatezavedaf4wl32.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/seporuweposositusesulibof.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/automotive_technology_6th_edition_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/vipekar.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/nuvobitegebomevapifega.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_off0000e465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE465 5568 bytes
SHA-256: ea90a286aac7ed96d9a58b6b3d359b0ba1feb433dbf9813dffadb8b2731ba792
font_01_sfnt_off0000f728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF728 10796 bytes
SHA-256: 4dc525dee53c5a62067187b5a09152c647c2d2a08e3dd9922eb4bdb3dbc4a218

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