Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2bc12073feaba46…

MALICIOUS

PDF

41.6 KB Created: 2020-10-02 01:31:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 962869faa06a6a90f109fbe5b4f12d09 SHA-1: 3273fdf7b64c78f28418255aa650cd9809644fff SHA-256: c2bc12073feaba46a93aeab0f03ddb6c9be990804574908d501a5b76a11517f1
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://ggtraff.ru/strik?keyword=ejercicios+del+presente+simple+y+continuo In PDF document text
    • http://files.farcornersmusicals.org/uploads/1/3/2/6/132681342/4262702.pdfIn PDF document text
    • http://buxitisow.stmaryslibrary.org/uploads/1/3/0/8/130813714/wotakatanosaze.pdfIn PDF document text
    • http://files.breastfeedingsupportcenterwny.com/uploads/1/3/1/3/131383823/55505a9e0.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/1/0430/8451/3444/files/marakexol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/flat_screen_tv_stands_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3025/1173/files/physicians_for_informed_consent._org.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ca08559-49c9-47c7-9631-18edf6ab8fc0/16818542085.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67f0f35c-8541-4e9f-bcd4-f4e665af3ed1/52239179058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7c1a77f-3bbf-4236-960b-d688ee24373f/dodanubagavanewevulumido.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/445b55cd-6597-4b4b-b744-0135a4bf1f04/vojenuserujuziwaborolijet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1c4d395-8611-42b4-b75b-ba37412f10f1/pakobuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21302259-f87b-464a-9217-4904582e2227/kovekokefanekagadez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47f91d21-cd2f-492b-b20a-3e333b34c15c/57054726046.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_off000061f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F0 5144 bytes
SHA-256: 6510c2e8a530904ae7a0dbbfc970243924a509b74d19cb3ff0723120342ec3cb
font_01_sfnt_off0000736d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736D 11072 bytes
SHA-256: 344301bad3e30ba1410f39ed4fdfb23a8d20d611f5862ecd3c078b487576c5dc

Open this report in the interactive analyzer, or submit your own file for analysis.