Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda33f66561b7020…

MALICIOUS

PDF

67.4 KB Created: 2021-03-02 18:08:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ecfe80acb9dc7c2e72f553b6454de54c SHA-1: 466d8f1e86b8b2b991a7faf2797cacc548f90e65 SHA-256: cda33f66561b7020e46e2b633a325890b64948ca46501f918b69b6937e503b45
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://mezovuduw.ru/award?keyword=does+tesla+make+the+best+electric+car PDF link annotation
    • http://kugewezebuvigiw.mygamesonline.org/80885566344.pdfIn PDF document text
    • https://cdn.sqhk.co/janezewufaj/gi7lexE/tizuselimonedodubilavinir.pdfIn PDF document text
    • https://pozivikebesar.weebly.com/uploads/1/3/4/7/134759309/ba9122b.pdfIn PDF document text
    • https://nevozijefase.weebly.com/uploads/1/3/4/7/134748823/2957874.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/take_5_oil_change_employee_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/tuminageka/gibvVii/24786365530.pdfIn PDF document text
    • https://loxufoxoxow.weebly.com/uploads/1/3/5/9/135982175/sowumoxito-zagiz-gafaleginalugas-tapizuwojivad.pdfIn PDF document text
    • https://dapasubasawesol.weebly.com/uploads/1/3/4/3/134383907/gosejejewubuvuz.pdfIn PDF document text
    • http://taxevidel.medianewsonline.com/nogosu.pdfIn PDF document text
    • https://nekazexupogufeg.weebly.com/uploads/1/3/1/4/131454238/7453998.pdfIn PDF document text
    • https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/96918e6e6e1d3c2.pdfIn PDF document text
    • http://palawawez.mypressonline.com/moxinadutaz.pdfIn PDF document text
    • https://fejamelaluboj.weebly.com/uploads/1/3/4/3/134311679/7cbf6.pdfIn PDF document text
    • https://wufodiwefoveve.weebly.com/uploads/1/3/4/8/134891768/7a35e9041.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/luxelula/kugivuderegokav.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/antivirus_avast_gratuit_android.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_off0000ccd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD3 5240 bytes
SHA-256: ba46d0f3477c1b0bb4666409ea2da56810f840852062534721fa4e48eee3d2ca
font_01_sfnt_off0000de81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE81 9780 bytes
SHA-256: c23017e3bad28ea68f796a5d609782a838d049255461d2ae937e69326e749939

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