Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f12953859ad439…

MALICIOUS

PDF

41.7 KB Created: 2020-11-05 21:35:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: d624d6e11eb1290cb92da156a5c64b91 SHA-1: 00aaa52a19ad70a8a39caa88b0daf95444b515c7 SHA-256: 93f12953859ad439749a1ba208ecc1204ff27d9ce3ddd8965d6c9a1266f09a32
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=better+furnaces+mod+minecraft+1.12.2 PDF link annotation
    • https://jegupifak.weebly.com/uploads/1/3/4/0/134018348/senuwewedulafu.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/15e43dbfda47b1.pdfIn PDF document text
    • https://bokixewabukogu.weebly.com/uploads/1/3/4/3/134341992/dotitugetepegif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375699/normal_5f951b2f0e2ec.pdfIn PDF document text
    • https://jorimedazaget.weebly.com/uploads/1/3/0/7/130738946/bilexizasiwogadi.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/turexir.pdfIn PDF document text
    • https://rimosuvifakub.weebly.com/uploads/1/3/4/3/134310068/fikumodamo_jigomope.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412195/normal_5f95e1ca29101.pdfIn PDF document text
    • https://vimadefivikimaw.weebly.com/uploads/1/3/4/2/134265378/cce443b90b384ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373004/normal_5f9ab8dc393d9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/janodojivi/83004160741.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/bio_format.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/fomimimiviw.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/zunesotipewagidar.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED8 5400 bytes
SHA-256: 595450debcbc1ad0fc2305d0a8fa599ac4945980b6ef8a99fab6af97cb34d80d
font_01_sfnt_off0000612b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612B 10456 bytes
SHA-256: 9f2181c05d58f183f4d8f228b50428bf3ed5c61a721b7f448a718721ea895d29
font_02_sfnt_off00008524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8524 16064 bytes
SHA-256: 6f41d85279102efce3c4bd26fddb767baf9b68a4f55e239fba9bedc2a2d3b953