Malicious PDF — malware analysis report

Static analysis result for SHA-256 65ac061d71e66309…

MALICIOUS

PDF

53.3 KB Created: 2020-10-09 16:07:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3dd24db216f61d6bf45619287a75fd6e SHA-1: 1821fe6b8e1ee980aba3c77fb8a7ddb4145fe4ff SHA-256: 65ac061d71e6630963b2a6e9a38175bee2794c3996ab84f822c791d4c2aa4532
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=simple+man+chords+pdf In PDF document text
    • http://files.worksbykat.com/uploads/1/3/1/4/131437725/6f520.pdfIn PDF document text
    • http://files.gofitathlete.com/uploads/1/3/0/9/130969776/jujalajumeda.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/27fb999c-680b-4a5b-b29c-d9fa3ffbeb7d/8239187982.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/642be91b-b42c-4ad6-b49e-1ac43597ed05/mobarudewuxusej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14a5785e-340f-489f-a0c8-ad79ed30bbbb/votafejatusananupijavesa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acacedf4-7203-49dc-826b-9c219eaffe0b/44319630103.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6a222c7-f2f4-4004-927b-f3de2032a1b3/koxaveroboguzopavuzoxumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6e8e298-ac18-4551-8275-b4bf5f24e45a/dazuvebekusofarom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eee1629-ee52-4103-9caa-71194b47b071/pegebefeba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e76a8a79-16fa-43e7-9e8b-e1f50d220c0b/72790995692.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/019dad2e-1fe7-4128-8580-933b7c267402/45101128887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9df7e7e-0a21-48ba-a95a-c6bf6b62097d/19811545771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29bcc979-db34-41b7-8af6-8aab19b85aef/fopebefatanivaburagapamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fcd5856-8ff3-4e68-a954-350682373447/kisuwujeziz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d75dd702-1668-46be-b4f1-de573b55a0c7/bolulidejasozibarolisijem.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A5 5500 bytes
SHA-256: ef47c26bf5ff133e853d417c2c3dbe94ecd146fd0ecdf5add5a659aaac62e280
font_01_sfnt_off00008324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8324 15116 bytes
SHA-256: 93fdd9016bfba594522912a069ddd5818d0787a90179bfbb5f3c62fb2c2222da
font_02_sfnt_off0000b30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB30E 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449

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