Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec346e23669e7007…

MALICIOUS

PDF

42.2 KB Created: 2020-10-07 05:30:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 311c8ffdaf0bc8fab39b6cdf85493619 SHA-1: a97b61973f5ea7cb25328802eb51144f1f0db54f SHA-256: ec346e23669e7007bc6aca9f509c429573652bc731ba33c6f1776e1eaa4510ba
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/pify?keyword=frozen+chicken+breast+in+air+fryer+how+long In PDF document text
    • http://gukila.humanitiesforwisdom.org/uploads/1/3/1/4/131410939/7208123.pdfIn PDF document text
    • http://files.jjfdirect.com/uploads/1/3/0/7/130776674/72c29741.pdfIn PDF document text
    • http://nibij.tustincbf.com/uploads/1/3/1/4/131407395/8550478.pdfIn PDF document text
    • https://site-1038980.mozfiles.com/files/1038980/pubawokawe.pdfIn PDF document text
    • https://site-1038963.mozfiles.com/files/1038963/84342713648.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b3db31e-d1d3-49ed-98a4-44fbfd6dc718/98216926920.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a22db97-5d4a-49af-b665-af258be453cc/bogeragovetexejatimok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e1a875c-6e74-4a1a-9c42-8728f260dd79/59990045398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b656fdf5-0ceb-4853-9925-6d27ea8dc2d3/fefeku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc9d5f4a-219b-48c2-bf7a-507a5f1cccc3/99531266173.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8632d3a1-342f-4f8d-97ff-98a9872a15a6/dulewurowasakipixisodut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23457050-254f-4070-9c42-24aa6de601c1/71146690820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0143e9f9-7fd5-4321-9507-0b826b69cae2/surovube.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C5 5544 bytes
SHA-256: cc3efd3eac4192c40c8e6d4709b1b12543617551cd8e9f09904af5d1131ed5ea
font_01_sfnt_off000079c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C6 10096 bytes
SHA-256: e96ce2664b0bcaaa30f0e11cf154cec4bde30681d52726f16d188cd2f7fc2357

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