Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25f9d904d2aa578…

MALICIOUS

PDF

43.1 KB Created: 2020-11-09 08:10:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 6433bdd3862cc9df6bc621e0224e88e8 SHA-1: 913bf18f6251a458051e7b3364d0329a3b3ea089 SHA-256: c25f9d904d2aa5789796c1388e5bbd24bafc1c0291e187200d48777d85899be0
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffi.ru/aws?keyword=war+cleric+channel+divinity PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389816/normal_5fa1fe989fae6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424009/normal_5f9c7fed35778.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422627/normal_5fa415f85fbd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419654/normal_5f9980f20a286.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://livatidepapo.files.wordpress.com/2020/11/29322475696.pdfIn PDF document text
    • https://gomites309456149.files.wordpress.com/2020/11/dedev.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/xafozili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51f74829-a468-44ff-8895-2808ea0d92d3/13041806228.pdfIn PDF document text
    • https://gozagatu.files.wordpress.com/2020/11/pipoxuvuvigadozuriv.pdfIn PDF document text
    • https://gisivimumoz941229752.files.wordpress.com/2020/11/kapemeri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ef8f4d3-259c-416a-9921-b307b52962c9/89880871170.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/minnsnowta_roof_razor_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/87868180326.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/xinunipamuw.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_off00006c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5E 5024 bytes
SHA-256: 63e36eb424f767cc3d2d534ec3919e7d3ca8e3f92b8a1aef30ad63bdeaed140e
font_01_sfnt_off00007d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7F 10028 bytes
SHA-256: f88a01dba7817ccf04a76d28b60a0aa5ff5308b1f71d1d347e21b0c59c77acde