Malicious PDF — malware analysis report

Static analysis result for SHA-256 1705d6222760a227…

MALICIOUS

PDF

70.2 KB Created: 2021-02-22 05:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7e32728d9fad256761dc762b62184cf2 SHA-1: beae30695d4bc3cf6d8d3275a9c954e651a9b8ff SHA-256: 1705d6222760a227bfc367815e9d1c1b9c438a614e89378f218ff8a4fba5ba5b
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/wix?keyword=the+great+gatsby+question+and+answers+chapter+1 PDF link annotation
    • https://pesadosopovito.weebly.com/uploads/1/3/4/2/134235692/4740a9c4462b.pdfIn PDF document text
    • https://cdn.sqhk.co/fedugaxoloz/eghT8rQ/neck_check_for_thyroid_cancer.pdfIn PDF document text
    • https://damanula.weebly.com/uploads/1/3/1/8/131856109/8447192.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383702/normal_5fe291b81df67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424007/normal_5fdb244e2b1ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368781/normal_602b007809a37.pdfIn PDF document text
    • https://labopepiw.weebly.com/uploads/1/3/4/7/134747507/7048616.pdfIn PDF document text
    • https://vobikonim.weebly.com/uploads/1/3/5/3/135390296/gawedugaxel-xuzegemiboj-navomerokalex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487927/normal_5ff029b0be334.pdfIn PDF document text
    • https://cdn.sqhk.co/marixefe/hfShb0g/jbl_music_app_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388824/normal_5fd84f8b55666.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426408/normal_600e0fb00aa32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465277/normal_5fe45ca45885c.pdfIn PDF document text
    • https://cdn.sqhk.co/zukuxenopo/uIWzjhM/teachers_credit_union_nyc.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_off0000d498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD498 5764 bytes
SHA-256: 070980a6f39ade34e04df024281a52ce4a83ce911e630ea53e1902fad508654d
font_01_sfnt_off0000e843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE843 10380 bytes
SHA-256: 9e03d6f5127c3df5fd4644de3806cfef87e95352a7960df5fa087232670de50e