Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06de3080fd33aea…

MALICIOUS

PDF

47.3 KB Created: 2020-11-07 00:48:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 8616f07225d50ccce336ab942365b1b6 SHA-1: 0fde2520e36b66471c0ea868a5b53dc2110e81cc SHA-256: b06de3080fd33aeafd7c96e69b83f9c058f5da9fd01d06cea884a944e62e11cf
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/123?keyword=famous+greek+love+quotes+and+sayings PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5f8731318a458.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392442/normal_5f96f55f20c2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371498/normal_5f899c3455641.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417809/normal_5f9ecb49141bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379742/normal_5f9573710e5c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xazarujokemus/walmart_app_for_scanning_receipts.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/ezgo_rxv_parts_manual.pdfIn PDF document text
    • https://wamefopoguvo.files.wordpress.com/2020/11/simple_personal_financial_statement_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/xubogejulelefaxapuje.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/36919992859.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/89414277722.pdfIn PDF document text
    • https://zerujad.files.wordpress.com/2020/11/45647870492.pdfIn PDF document text
    • https://mopuxupu.files.wordpress.com/2020/11/94567162677.pdfIn PDF document text
    • https://lamojofof.files.wordpress.com/2020/11/me_divierto_y_aprendo_1_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/bose_ceiling_speakers_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5e468ac-8ddd-4065-90ae-2211960170d9/how_to_summon_arceus_in_pixelmon_reforge.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFC 5336 bytes
SHA-256: d5ad44457fdbec5d73e99a4ad76004b26b76130bfe668f9885a612afecf1b75f
font_01_sfnt_off00007f11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F11 10364 bytes
SHA-256: cc145574f80f6f2734ffe78f982235b15aed2a9785e932f4cdfe0b199cf4976f
font_02_sfnt_off0000a24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA24D 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2