Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eaf04a7bd68de2a…

MALICIOUS

PDF

72.3 KB Created: 2021-02-28 08:33:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d957558637234d557992fdc4ac491cbc SHA-1: dbd752f1d445c11522b31a82e9852821ddbb44f4 SHA-256: 4eaf04a7bd68de2a5ea651f3befba52ad32f86b9216b4cb587ebf93fa340782a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=how+to+set+timer+on+boiler+worcester PDF link annotation
    • https://favexolifuluk.weebly.com/uploads/1/3/6/0/136092880/kuzoguwilu.pdfIn PDF document text
    • https://voropulunonuz.weebly.com/uploads/1/3/5/3/135316946/wuxagutuwipitad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481540/normal_602da0a3e5732.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/jbjemBQ/35288699700.pdfIn PDF document text
    • https://jarufepijup.weebly.com/uploads/1/3/0/7/130776730/15931a7d3b5d2fa.pdfIn PDF document text
    • https://degezumibupupek.weebly.com/uploads/1/3/4/8/134862322/rosipufemiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378618/normal_5ff0ee8426f8d.pdfIn PDF document text
    • https://xuzizalebu.weebly.com/uploads/1/3/4/7/134772475/5286e2181.pdfIn PDF document text
    • https://voperupazekeko.weebly.com/uploads/1/3/4/5/134505312/tazurezoxodupowef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fusatepalu.epizy.com/kerepeve.pdfIn PDF document text
    • http://bewidiri.rf.gd/77944171702.pdfIn PDF document text
    • http://sivojosifa.epizy.com/surovifizoladizasani.pdfIn PDF document text
    • http://taluzeze.rf.gd/obtain_police_report_nashville_tn.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/75134559096.pdfIn PDF document text
    • http://tabojiterakan.rf.gd/41284456693.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_off0000e02a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02A 4928 bytes
SHA-256: 0cd2368f9a0d5ff9635b13b446f812d609f2d72965280f57c804e468ee567276
font_01_sfnt_off0000f0e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E7 10428 bytes
SHA-256: 147606e7d1e7ae1620c5e1ab2b9057da46511f90ca89dd980b83471325ec5b54