Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8715812527277f6…

MALICIOUS

PDF

73.2 KB Created: 2021-01-28 11:25:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2297c734fa166720bef16e1002309c89 SHA-1: 6d3b5adac899d4ac57f6aac84376ee7240648d86 SHA-256: d8715812527277f645a95299f06179739a6af42b0b380e504c914753d76ebc4f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wb?keyword=sniper%20arena%20pvp%20army%20shooter%20hack%20apk%20download PDF link annotation
    • https://volorizog.weebly.com/uploads/1/3/1/0/131070051/mirozit-sifepe-wapipegom.pdfIn PDF document text
    • https://vadurevagide.weebly.com/uploads/1/3/3/9/133999829/4332216.pdfIn PDF document text
    • https://cdn.sqhk.co/pezolaje/jjLbNLQ/followers_app_free_coins.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464877/normal_5fd1d84babe38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464315/normal_5ff9bcd603023.pdfIn PDF document text
    • https://sekikeke.weebly.com/uploads/1/3/4/7/134739811/5421853.pdfIn PDF document text
    • https://cdn.sqhk.co/zenetofuma/ifieusT/snakehead_fish_wellington_florida.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/fofeguj/litukivejozejakaxug.pdfIn PDF document text
    • http://nogobixa.epizy.com/xediwojudi.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/ethereum_mining_pool_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/9413539788.pdfIn PDF document text
    • http://koxowasone.epizy.com/94358855204.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/knewton_answer_key.pdfIn PDF document text
    • http://zenejifawulo.epizy.com/adobe_indesign_curriculum_vitae_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/16454295363.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_off0000dee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE2 5732 bytes
SHA-256: 747941146d2bcd402a0920600ddb920da44f81f4e5ead68fa56cead741b04300
font_01_sfnt_off0000f25b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF25B 10968 bytes
SHA-256: 0773f48fa7b23e630de6e9aa970d1a200e5834487e0c1f51a7dc42f147d4b387