Malicious PDF — malware analysis report

Static analysis result for SHA-256 00093e0a841255a6…

MALICIOUS

PDF

42.4 KB Created: 2020-10-28 11:40:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 344d635ea9b3153f177ea638f5ca0830 SHA-1: 92c92ce036f260ee632eafe6e0ebdda5f1a68cf3 SHA-256: 00093e0a841255a6d95398c2bb4ce648d59978296f6fa08c494ca4535863e45f
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=red+tick+beagles+for+sale In PDF document text
    • https://rineragafuvotut.weebly.com/uploads/1/3/4/4/134442037/8949690.pdfIn PDF document text
    • https://zolefixu.weebly.com/uploads/1/3/4/4/134432518/widumatipexuxipogug.pdfIn PDF document text
    • https://bososafevibusup.weebly.com/uploads/1/3/4/0/134041518/36467d.pdfIn PDF document text
    • https://jakemujilofadam.weebly.com/uploads/1/3/1/3/131380171/kemufaf-rekarex-zilivove.pdfIn PDF document text
    • https://xosetumigex.weebly.com/uploads/1/3/4/3/134371377/773382.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006454.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006454.bin)
    • https://uploads.strikinglycdn.com/files/2460befc-88ae-4590-8124-656075eb70d3/58459939502.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/answer_sheet_1-_50.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/revevoforuvinumedaxori.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/clarividencia_charles_w._leadbeater.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/patonunevefidosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8258/6528/files/social_media_marketing_strategy_thesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9779/2420/files/xedowije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8307/0629/files/electrical_estimation_and_costing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5723/2034/files/fivikubop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9087/9667/files/35350874735.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/11625490822.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/bar_bending_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/telanomugesikit.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/11557065128.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 extracted file (font_00_sfnt_off00006454.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6454 5400 bytes
SHA-256: 92660922dc801997614d7a4458f569f1e406464bcb549a96da3b9bfa1cc81292
font_01_sfnt_off000076cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76CC 11192 bytes
SHA-256: 2c815ebeb14bc3d82f225a88df86673fffbf9c8fcf2cb9f35a8701213cd1234f