Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c22674b698045f…

MALICIOUS

PDF

69.1 KB Created: 2021-01-20 09:19:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 7cc81019f3e0425729fd479ca20c19e4 SHA-1: 085fce11f77fe5bc20f41e24285330e2284a81c6 SHA-256: 68c22674b698045f40a7413aec4b360730ea7a663bb1df5c7eda4cb7b07f1883
244 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
  • 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/wb?keyword=donuts%20drift%20car%20driving In PDF document text
    • https://cdn-cms.f-static.net/uploads/4474223/normal_5faaf331de293.pdfIn PDF document text
    • https://xevumijujivo.weebly.com/uploads/1/3/1/3/131383583/eb729deac2f69cf.pdfIn PDF document text
    • https://gawejewigedek.weebly.com/uploads/1/3/2/7/132741035/nebevaruk.pdfIn PDF document text
    • https://tebifuwufarul.weebly.com/uploads/1/3/4/8/134886387/21c7b697027fa7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391317/normal_5feffbda0897d.pdfIn PDF document text
    • https://dexuganepo.weebly.com/uploads/1/3/1/6/131608037/kiwitutemuwaxapaj.pdfIn PDF document text
    • https://site-1175981.mozfiles.com/files/1175981/xigef.pdfIn PDF document text
    • https://tipozuroboga.weebly.com/uploads/1/3/4/2/134265922/widumixid-nafonepibepo-rezatabekax.pdfIn PDF document text
    • https://siresikewutawin.weebly.com/uploads/1/3/0/7/130739490/rukukip.pdfIn PDF document text
    • https://dopozigixojak.weebly.com/uploads/1/3/4/5/134509916/kofizolevasumoxaso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381098/normal_5fabf5952aba0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472488/normal_5fd6f3089132a.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/tugumeb/donivuranufi.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/45577685959.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/new_army_dress_uniform_wear_date.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_off0000d28a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD28A 5216 bytes
SHA-256: 86f7951b26e83ab6640cbc90d473c70e681e865c920573d355e5286815513f2f
font_01_sfnt_off0000e468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE468 10400 bytes
SHA-256: 00ac6dad8cd766e8bed01e687544d8710568583f65c55ea8c2d31433abee5a52

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