Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee8ea3c68094516…

MALICIOUS

PDF

37.9 KB Created: 2020-10-26 01:03:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: eb494a46320fb233f61906be58c1badb SHA-1: d12a44c3dedeef6a9ac268598588bf0b913d0b90 SHA-256: eee8ea3c68094516d35face2cac12a64fec03826ace3f807cbe0ee5d91551587
194 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.
  • 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.
  • 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://cctraff.ru/aws?keyword=asme+b31.+4+pdf+free+download+2012 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376874/normal_5f8a0281a7682.pdfIn PDF document text
    • https://xebivonejawaf.weebly.com/uploads/1/3/4/0/134096192/zutixurivawobilif.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/mowivuvabajanow_vusup.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/8423888.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/nunobavupig.pdfIn PDF document text
    • https://razezoxuwen.weebly.com/uploads/1/3/1/4/131453099/popegefov-robet-tifafovivikeju-gunowetugur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388596/normal_5f9601b0d8c77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383149/normal_5f900a3637f45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373526/normal_5f8b3e5871755.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382186/normal_5f9030687a680.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/1/0493/4044/8962/files/pesabuvorovitukituboju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2069/5742/files/modul_akuntansi_keuangan_menengah_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0082/2934/files/non_linear_relationship_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7970/5783/files/distributive_property_worksheets_3rd_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1488/7847/files/xml_query_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/vifololurolowekar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5951/0425/files/25186027296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0668/8412/files/xedodazisazowela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5747/0872/files/sawesazorenejoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/bujuvilifagajezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9462/9788/files/anime_harry_potter_images.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2349/7877/files/56318944933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/1466/2562/files/turbo_pascal_7_manual.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_off00005338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5338 6020 bytes
SHA-256: 019ddfe51ebac57e9c0b193729ff8b4787f9444987473ce9199e9cb864455efb
font_01_sfnt_off000067ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AE 10048 bytes
SHA-256: ea401e7066d8ff54de44a5fb7857187d8c35ef987ee05dc420b47c5661c61087

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