Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cc5bd6606331423…

MALICIOUS

PDF

43.5 KB Created: 2020-11-09 09:57:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: aa7eb622d89534099d35811a7388fdc4 SHA-1: 7f2f3b88c5dd361cdcbe90f6b1553fd7284f7962 SHA-256: 5cc5bd6606331423657babcd90dbad9db1900bbf52728b8e67b290edb4a0e4d5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://trafficel.ru/aws?keyword=sugar+facts+worksheet PDF link annotation
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/a8de737c18816af.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/5011088.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/kuxeb_jesusageb_limurub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369302/normal_5f8faea0c6375.pdfIn PDF document text
    • https://rofuvawe.weebly.com/uploads/1/3/4/3/134363923/6570460.pdfIn PDF document text
    • https://pisebozelo.weebly.com/uploads/1/3/4/6/134657423/3097657.pdfIn PDF document text
    • https://zivawopoxiba.weebly.com/uploads/1/3/4/3/134355714/sedumuje-nilisadujakepe-sunim.pdfIn PDF document text
    • https://degepuwenezeg.weebly.com/uploads/1/3/1/6/131607310/c7a602bff8.pdfIn PDF document text
    • https://gimifuzakid.weebly.com/uploads/1/3/4/3/134315082/befesozun_lapupi_gitalobulejiru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378167/normal_5f8e9d0e87d50.pdfIn PDF document text
    • https://bezebaterizijir.weebly.com/uploads/1/3/1/3/131384714/118d882e318410c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://pidukok.files.wordpress.com/2020/11/52241195664.pdfIn PDF document text
    • https://wizugovo.files.wordpress.com/2020/11/98277029815.pdfIn PDF document text
    • https://xuzinazemu.files.wordpress.com/2020/11/lozofikamedafit.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_off00006b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B23 5368 bytes
SHA-256: e135bf82b05fe5b9783041feb91854803c0bed87bce911c76d29078b25b3e899
font_01_sfnt_off00007d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7B 10556 bytes
SHA-256: f54f35c0c99e741247a4dab95fe3727417f173f05cdb3876d83fb5577f14fb42

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