Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bdce819cd368151…

MALICIOUS

PDF

44.5 KB Created: 2020-10-27 07:36:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 48c46d0d0a7231c4e6a5621e9471bf11 SHA-1: eb8d1a1cd8c851636d047eeeaef3d34bfdf91bf1 SHA-256: 6bdce819cd3681518bde003d4819d08997afb2ec265a5dc666c9f9f9eecda952
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ggtraff.ru/123?keyword=origami+design+secrets+pdf In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/mikukinib.pdfIn PDF document text
    • https://beritugemob.weebly.com/uploads/1/3/4/3/134332724/4676667.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/fonukimodoxebubokaka.pdfIn PDF document text
    • https://fipaziditude.weebly.com/uploads/1/3/4/4/134465794/bogofolazot-mezoxigizem-reluraj-xiwulagar.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/lagumisebemaja.pdfIn PDF document text
    • https://fabuxitewuf.weebly.com/uploads/1/3/4/3/134349615/getelenan-vujiwanazonixow-piwedanuxu-kosajovufu.pdfIn PDF document text
    • https://pisanofinupu.weebly.com/uploads/1/3/1/4/131437881/finotobe-geneku-sekazifavuneg-nuguturoma.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/xevurajefikepemidan.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/7789051.pdfIn PDF document text
    • https://gekeforoka.weebly.com/uploads/1/3/1/4/131438206/jakodupanuwolo_buzupagereke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_5f895b9ca8d04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369920/normal_5f886d642c8bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369327/normal_5f944f5bc9b62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379726/normal_5f94a86fa26a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413980/normal_5f948dbf4e0be.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6629/0076/files/unblocked_66_head_basketball.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3543/3882/files/36614552388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0601/6674/files/novepeluvelimajaxasugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3986/2183/files/metro_why_did_the_dark_ones_attack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7040/0928/files/30234492128.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_off00006f85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F85 5468 bytes
SHA-256: eafc33583e30654deb9e0beaec5ffa1c05864d0155c3c3158707e5179a4c39c3
font_01_sfnt_off0000820a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820A 10068 bytes
SHA-256: 13acc9f3ec440ea0ff422c4b1569536b42e9aeb9521e1ce1aacf9891542b43c3

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