Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc4949a39ea4a6e…

MALICIOUS

PDF

70.4 KB Created: 2021-02-20 16:56:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cefa7a25d92edd20993960241493d4d6 SHA-1: 30293714f6a3bcd4f0749569afc944eada5b512d SHA-256: adc4949a39ea4a6efea1d18e563f87680a1228c46cae0421c1851493509bf87d
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://baarspo.ru/wix?keyword=bloons+tower+unblocked PDF link annotation
    • http://dakolozen.22web.org/26559217842.pdfIn PDF document text
    • https://tigelulipuneve.weebly.com/uploads/1/3/4/7/134746657/sotimugesez-zutiladud-raxikoxev-jevonanuvifim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5fd2aceab1e63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373508/normal_6009db702c326.pdfIn PDF document text
    • https://buvefejam.weebly.com/uploads/1/3/1/4/131453018/6cad5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383449/normal_60250ebcdc35a.pdfIn PDF document text
    • http://fruit-citrus.space/youtube_tv_vs_hulu_live_vs_slingn9jf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456667/normal_603015608a3a3.pdfIn PDF document text
    • http://raifaisentgo.online/ya_devi_sarva_bhuteshuxfvxx.pdfIn PDF document text
    • https://vefavufarexuba.weebly.com/uploads/1/3/4/3/134315694/c45f7abdb7.pdfIn PDF document text
    • https://kenufipafalenar.weebly.com/uploads/1/3/4/6/134616414/fivap-vowoto.pdfIn PDF document text
    • https://zosujugopaw.weebly.com/uploads/1/3/4/5/134509911/293ed07b.pdfIn PDF document text
    • https://fopepusev.weebly.com/uploads/1/3/1/3/131383694/2937610.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vomokutamorarat.rf.gd/82622362247.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_off0000d7af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AF 5068 bytes
SHA-256: 3d4c2b868291f9866069142bfd166a5567157521e53e6f05d5ed1d865b95b2fa
font_01_sfnt_off0000e911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE911 10480 bytes
SHA-256: aba02ae3c3f59e789b341a8d98b166c31e8dd779373a45549f024cb4dd40f8d3