Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f8f1b38b6a38712…

MALICIOUS

PDF

75.9 KB Created: 2021-02-27 05:26:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 03e6f9ea36a0a80c5b10f529c4f6b0b0 SHA-1: 04cc8137623bca3fb5a1d48c2710715de8aeb70e SHA-256: 3f8f1b38b6a38712eb9754f7b5d6535ba932964c26e230d136e1d5188c2769a4
186 Risk Score

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://ponafet.ru/123?utm_term=who+are+the+7+churches+in+revelation PDF link annotation
    • http://vugekowuzujed.scienceontheweb.net/kebigemofaki.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/lupanubevogosavumidud.pdfIn PDF document text
    • https://sogatetemurus.weebly.com/uploads/1/3/4/3/134379625/905419.pdfIn PDF document text
    • https://ridimejaxokixis.weebly.com/uploads/1/3/5/3/135340331/143bea2a.pdfIn PDF document text
    • https://fuwudasex.weebly.com/uploads/1/3/1/0/131071129/lejotugexepuzotole.pdfIn PDF document text
    • https://bufuxilanu.weebly.com/uploads/1/3/4/4/134402831/nivuf-rajov-xerosogapajopol-zumiderijeru.pdfIn PDF document text
    • https://tezigawoje.weebly.com/uploads/1/3/1/3/131379443/4baf8ca08.pdfIn PDF document text
    • https://valodoxajub.weebly.com/uploads/1/3/4/4/134435871/8198031.pdfIn PDF document text
    • https://dilukali.weebly.com/uploads/1/3/4/5/134584555/2035971.pdfIn PDF document text
    • https://lekipavovat.weebly.com/uploads/1/3/4/3/134332936/napabajezuz.pdfIn PDF document text
    • https://dobisuji.weebly.com/uploads/1/3/1/4/131454523/selajanomuxuti.pdfIn PDF document text
    • https://dararozemab.weebly.com/uploads/1/3/4/8/134871472/bekakivetefe_godikirida_xizalumirasari_zuxuwiges.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/wunupalezozerud/cereal_box_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/38068119250.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/zedodi.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_off0000eaba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABA 5040 bytes
SHA-256: 7fd4227034f5ea82b3820c77cd23fdf6b83914f04602018da4e5d18a80ea7d24
font_01_sfnt_off0000fbf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF0 11500 bytes
SHA-256: af41ac19e62e868c8641775b2b11e26ec40b40e9cc166801296c10d3105e9337