Malicious PDF — malware analysis report

Static analysis result for SHA-256 14cbfee240305338…

MALICIOUS

PDF

65.6 KB Created: 2021-02-11 17:44:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7d536134db92ba4eec1a2b0a10c6c37f SHA-1: 3489972a6102d99fb1fccfb54dd7ceec6f88ba98 SHA-256: 14cbfee240305338b3ccca3cea42adc7eeaa02144e9a22e02a12025cbd54f4b0
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://druttle.ru/wix?keyword=southern+pride+pitbulls PDF link annotation
    • https://cdn.sqhk.co/dozumapufa/gjhggjf/88858907543.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452861/normal_5fcf1601b6150.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubokave/geigOjd/mufotijorududur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378379/normal_5fdd763ed996f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366331/normal_5fcf70c867cea.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/f8SiihL/food_wars_season_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369774/normal_5fe9b67c6ee31.pdfIn PDF document text
    • https://cdn.sqhk.co/takulowizi/aYhcidT/nhl_hockey_schedule_sunday.pdfIn PDF document text
    • https://cdn.sqhk.co/baresupujar/ihhi1jf/raxofatodofakor.pdfIn PDF document text
    • https://fumirufax.weebly.com/uploads/1/3/1/8/131856188/wuzifopobipo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nemiropeseti.rf.gd/83696325950.pdfIn PDF document text
    • http://zujugefov.rf.gd/66291619160.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/19627923101.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/kironovixaxuravif.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_off0000c2ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2AD 5080 bytes
SHA-256: d15721e8710ea4892a5b29e3975928a60da74fd5420d3254ba013569e8961d4b
font_01_sfnt_off0000d3df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3DF 10504 bytes
SHA-256: c31a8e04e7630989dc3b196271d8612e98aa8c4f864e1facc3ff6819db5724a0