Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d042e218063784e…

MALICIOUS

PDF

72.8 KB Created: 2021-02-28 23:29:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 892e7c17414e303579d35bb6e1bba455 SHA-1: 3855557f879d7447c6761a0a96c202b89a3bff65 SHA-256: 6d042e218063784e3039e5579203db4cc942a58edb75ed110b6dc444cfaf0558
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://kuzutuzo.ru/wb?keyword=how%20to%20change%20light%20bulb%20in%20ceiling%20fan%20hampton%20bay PDF link annotation
    • https://cdn.sqhk.co/pesegozod/chg40ha/kipova.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454043/normal_5fee789aaaeca.pdfIn PDF document text
    • https://cdn.sqhk.co/dibitarebizu/Aji1iae/11833665117.pdfIn PDF document text
    • https://cdn.sqhk.co/pubamegumox/K6hdxVa/hedgehog_wallpapers_for_free.pdfIn PDF document text
    • http://nepatokada.mypressonline.com/35460432854.pdfIn PDF document text
    • https://zevexeduj.weebly.com/uploads/1/3/0/8/130874566/papew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389794/normal_5fd091082f8a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424043/normal_603bb549c4270.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/kusesapuwatunonagedogela.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406191/normal_5fecb8ddca239.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/nevovumowa/89513438376.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/84227403741.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/99076057915.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/basic_bioreactor_design.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/wpbakery_page_builder_global_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/ziberotokudamugaza.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/mamaroneck_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/astronomical_telescope.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_off0000e03b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03B 5448 bytes
SHA-256: 3418bf55c1b8e4149f5782c1b9e7a17d706fab85cef8cc384b080d73eaecd1fa
font_01_sfnt_off0000f2c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C3 10240 bytes
SHA-256: 8fa12e2cf5d3e3a6c85156988d18cd9fdd7d66b456fe0425b8abb956add9d31c

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