Malicious PDF — malware analysis report

Static analysis result for SHA-256 787811b700096a45…

MALICIOUS

PDF

71.4 KB Created: 2021-02-16 19:55:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8cc17f797c138d5ab3a80200a0836405 SHA-1: 7bcd4ea2b30d8ec35d14a4808d45e2e7f5854f2a SHA-256: 787811b700096a456a1d638c8eb34e7734dfd06f697d9016fa83dfc691412e29
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=el+credo+oracion+catolica+letra PDF link annotation
    • https://sitekitenuzuvi.weebly.com/uploads/1/3/2/3/132303150/vatijipaxu.pdfIn PDF document text
    • http://gallery-shop.site/numotekibokomaxoduraziguruo6n6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370265/normal_600112015e263.pdfIn PDF document text
    • https://wisetigu.weebly.com/uploads/1/3/4/3/134357320/meranisi_xidotujezajobo.pdfIn PDF document text
    • http://jusapp.club/beyond_borders_full_movie_freesn4hs.pdfIn PDF document text
    • https://jejonogukoji.weebly.com/uploads/1/3/4/8/134864124/4110208.pdfIn PDF document text
    • https://wikifepum.weebly.com/uploads/1/3/3/9/133986434/bozosomo.pdfIn PDF document text
    • http://energierecrute-emplois.com/arkansas_razorbacks_football_uniform_historyrat7p.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/74cb001f35d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488339/normal_5ffa96747a14f.pdfIn PDF document text
    • https://jefilixepiras.weebly.com/uploads/1/3/2/6/132681342/sigawu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409239/normal_600540ed8a8e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387704/normal_600cecce56302.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/tank_recon_3d_lite_downloadh3jux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446633/normal_6021d21202286.pdfIn PDF document text
    • https://dosupara.weebly.com/uploads/1/3/1/3/131380612/8212847.pdfIn PDF document text
    • http://shoop-fn.ru/sinopkyrx3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412159/normal_5ff13393bb5ac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB21 4712 bytes
SHA-256: 9d7a3ac245f8a968a6eef63c04d4fb36aab0b3e2ade41a4226258da55aac2208
font_01_sfnt_off0000eb32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB32 10816 bytes
SHA-256: c4f950524f8187069ff3eb88a0605a8b7bce5b3cf43bb25fc261102f795dd023