Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0dcc3ddbd6fefee…

MALICIOUS

PDF

45.1 KB Created: 2020-07-31 09:07:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d6f014c1580d38d0ddee9c4f4d26405f SHA-1: 30e54b58d64613458cc909cd480659a4a5a4c30d SHA-256: b0dcc3ddbd6fefee59ecb820a3e216395176cff25cd446b9a075734aef7b5aeb
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://ttraff.ru/pify?keyword=bagian+bagian+bunga+pdf In PDF document text
    • http://files.fhpsc.ca/uploads/1/3/0/7/130775916/8431359.pdfIn PDF document text
    • http://files.parsonsarea.org/uploads/1/3/2/3/132303406/xasosefebekus-relivajosur.pdfIn PDF document text
    • http://files.greenfieldhistoricalsociety.com/uploads/1/3/1/4/131453989/kotumi_mavubabiroz_kuradenepir.pdfIn PDF document text
    • http://files.nantonanimalprotection.ca/uploads/1/3/0/9/130969791/b1b2e6ffe.pdfIn PDF document text
    • http://files.called2lead.com/uploads/1/3/2/6/132695714/fa3bfb1cd3.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/1/0433/0032/3478/files/satexena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4827/9970/files/10379285987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/dogodunowosagikizugirepuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3748/9309/files/28889053103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/gasuvagumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0294/3909/files/wuruduguwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2336/7335/files/84585159531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/4766051859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/23124359342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5229/3541/files/68989585862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4395/4594/files/pajukoborojubetuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/wewoxesokobilipalisej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/jujidisof.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_off0000754e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754E 4668 bytes
SHA-256: 64a845f8895c3a6874a045858554a03429c78e8295746acf8a7cee91a149cfbb
font_01_sfnt_off00008528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8528 9864 bytes
SHA-256: 07a0b205451689ba7ed2e882847e9d217547aaf9c2221e273c7659aa0dc098f9

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