Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d430860de5cd4db…

MALICIOUS

PDF

65.2 KB Created: 2020-10-07 19:15:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b7a9959a285023e9d04dd9fbfb84be0c SHA-1: f2beea4ff0af08fcbdf77a64899543678c095aa6 SHA-256: 0d430860de5cd4db4466442a68b04bd4921c2f2988f2f4064410e2aaaa59faf3
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://gettraff.ru/strik?keyword=common+french+expressions+idioms+pdf In PDF document text
    • http://gakej.rjkaplan.com/uploads/1/3/2/8/132815015/c40903e5dc70df.pdfIn PDF document text
    • http://files.memphisjapanfestival.org/uploads/1/3/0/7/130776714/4930d9.pdfIn PDF document text
    • https://site-1036872.mozfiles.com/files/1036872/47472463351.pdfIn PDF document text
    • https://site-1040387.mozfiles.com/files/1040387/3287653615.pdfIn PDF document text
    • https://site-1036918.mozfiles.com/files/1036918/1348137504.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/1fdeb831-2465-4440-a4cf-8e3255e3026e/zejadesiparo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b2a45cf-f529-4328-b8c4-99d8f52c60fd/sidegade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07a20c3e-0cfd-4989-ad1a-403c44ec40de/pivezotezadujiridobojezi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78e18222-350c-40b6-a10d-925f1c667e0e/88504103135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45ce0f00-0625-41b3-a345-cabc94ec1d1b/37871019037.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/345c740c-1a7b-4a64-ba4e-82116d4c028c/pameveva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29b79263-deda-4d26-a075-a6a94631f018/75626920580.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f29e68f-2e02-414e-860d-2dc0bf2d2b46/52190588529.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab2516d0-5c57-4306-a211-ab45c28752ca/48386894204.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_off0000c46c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC46C 5128 bytes
SHA-256: c476f6c71ddcdbfabeae0a27bf0b24e9e7b6b98190289ce4f4153679489b7611
font_01_sfnt_off0000d5bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5BB 10088 bytes
SHA-256: 464c0231ceaf980aded28c0021f966dc18ab0d633792e05854249f3aed589163

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