Malicious PDF — malware analysis report

Static analysis result for SHA-256 705e6a143f2dfe3e…

MALICIOUS

PDF

83.5 KB Created: 2021-01-07 13:42:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: be5b3d455fdcf3c38792ba57fd9aaa8f SHA-1: 2e2c2bcff2b468b4391c8d971faec47c10902de8 SHA-256: 705e6a143f2dfe3ee4cd5f03c9597e7a5f17bb9c4cfa635f713c7975b66b107d
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/wb?keyword=olympics%202016%20basketball%20winner In PDF document text
    • https://cdn.sqhk.co/gadukupuwe/kehjudP/she_wants_me_dead_lyrics_deutsch.pdfIn PDF document text
    • https://cdn.sqhk.co/wavefekus/tUgiS90/rifizogareruwoxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391308/normal_5ff56a772a71f.pdfIn PDF document text
    • https://kafigibedup.weebly.com/uploads/1/3/4/4/134479504/6612702.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367622/normal_5fc73289cabbc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c56dab1a-341a-4870-99ef-807f7554977b/henry_miller_tropic_of_cancer_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bfec221-3ed5-40bd-8b39-8b7a323a9625/christmas_movie_quotes_trivia_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0019f183-8566-4f07-99e9-d769dbaecda0/silazavodowofivadiberu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42feb61c-1593-420a-8607-21364d306c6d/kofadezakatabagiralikobol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8b9b965-1343-4d7e-83a0-ddd0c0d36daa/99047721411.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88540c6f-63a2-47b3-9c7d-7e3f906480a3/15826892653.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddcd1fa6-211c-4700-9f6e-eaaea47d1814/93271053024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c72c852-0c12-4b42-abd1-c8d2ab149844/song_of_double_time_ocarina_tabs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f50f842-2bca-4711-9e6b-64e131e3aab5/98587412884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c8913da-c2cc-4209-bb7c-76c67ce4cbe2/80099444829.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_off0001072c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1072C 5984 bytes
SHA-256: be80cda31f95257d77cb6c57db43b682bfe31a795c6cd3289032beacc1c2b161
font_01_sfnt_off00011b89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B89 11264 bytes
SHA-256: dfdced06b8a0e09088dfd97073c1f36d11c2e2b489c30616f2097ec8ae85b15d

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