Malicious PDF — malware analysis report

Static analysis result for SHA-256 afe37a19844b5e0e…

MALICIOUS

PDF

72.9 KB Created: 2021-03-02 14:43:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 88236f47b33d7277bceb03db1224ba53 SHA-1: 00716b69434ab8787353f475066e66dee455b447 SHA-256: afe37a19844b5e0e9d597a48dbdc1cbdefb144d1ec399356fbd784e51f572ad5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/award?keyword=how+do+you+say+pray+for+the+peace+of+jerusalem+in+hebrew PDF link annotation
    • http://sipataj.sportsontheweb.net/goguvowexewafu.pdfIn PDF document text
    • http://galufixagomedo.getenjoyment.net/89908341259.pdfIn PDF document text
    • https://wuwemupijebuvat.weebly.com/uploads/1/3/4/0/134012408/48956.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/why_is_my_dishwasher_not_fully_draining.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/21094522629.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372371/normal_5feba5fd67bd4.pdfIn PDF document text
    • https://muboxofibadufus.weebly.com/uploads/1/3/4/3/134310828/godupevajejebaf_faremoxe_kipap_wonebekanamuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384821/normal_602e6b918cdab.pdfIn PDF document text
    • https://wadamosemexijep.weebly.com/uploads/1/3/4/4/134434227/ketidovefabu.pdfIn PDF document text
    • https://kuvikupomudu.weebly.com/uploads/1/3/4/4/134457818/1fbf42451.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388158/normal_6016387fa548b.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/fulazelof/15062218524.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/zavitoxegulubosofabuxexiz.pdfIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/72478280.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/42690110710.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/extent_report_cucumber_adapter.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/87612380839.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/pandora_s_box_game_free.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_off0000dfa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA4 5768 bytes
SHA-256: a687d5ffdab4a8f5bd2371547230990df1c642bdd53c5575e692fb0b0ca73d71
font_01_sfnt_off0000f32d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32D 10208 bytes
SHA-256: 33f2f6e307c9af0dbdd354cbd8e8de8af23695f9e441f62fbbd627e6a9a00a46