Malicious PDF — malware analysis report

Static analysis result for SHA-256 a70e034861d77dc4…

MALICIOUS

PDF

72.3 KB Created: 2021-02-17 19:07:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: be8f4614925276f8ed7ffa35d1be2f91 SHA-1: c5515f24b410f96223462757322aa221503fee2e SHA-256: a70e034861d77dc4ae26487be637d67ba2b362f23db3b84e5f9f8047340b0493
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=moxie+salon+%2526+beauty+bar+livingston+nj PDF link annotation
    • https://bezofaxifi.weebly.com/uploads/1/3/1/6/131606652/xovupadawibigob.pdfIn PDF document text
    • https://fotewusobowo.weebly.com/uploads/1/3/5/3/135339642/jolexotunulemugow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471995/normal_600b47c8b4f27.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453907/normal_5fee3f3e90080.pdfIn PDF document text
    • https://kurexutolik.weebly.com/uploads/1/3/5/3/135350225/wedipogozadulig_loninesoj_tizuluxafexed.pdfIn PDF document text
    • https://zugimawaxudal.weebly.com/uploads/1/3/1/4/131410952/difovozomidibolamiva.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416787/normal_5ffdfee8b35a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490365/normal_5fe8538de220e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466666/normal_602380f81b0b3.pdfIn PDF document text
    • https://titezexi.weebly.com/uploads/1/3/4/6/134639754/sewakurogejuxajafe.pdfIn PDF document text
    • https://vixadabunukup.weebly.com/uploads/1/3/4/9/134902839/9442821.pdfIn PDF document text
    • https://vavaxomutiposev.weebly.com/uploads/1/3/0/7/130738712/ralero.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/gewisetug/19800266754.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/hebrew_bible_audio_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/evidence_based_research.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/dancing_queen_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/56124984423.pdfIn PDF document text
    • http://nuzuzetopodufi.epizy.com/amd_radeon_520_graphics_driver.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_off0000df3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3A 4656 bytes
SHA-256: 97072315e8f5c7af9a674c2907c784807b7672344a62fe05c54459bdcaac733f
font_01_sfnt_off0000ef31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF31 10928 bytes
SHA-256: 05c90d9063313ac78bc5590e10b6996776a1c1d000b3165b061ff45b826d07f9

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