Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f76fceeb987677…

MALICIOUS

PDF

70.9 KB Created: 2021-02-20 20:29:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a91906d273b5ada0748e36d7a90ba0e1 SHA-1: 84c68ad0692cd0552a26eb0eaaaf9dda61bd8d06 SHA-256: c6f76fceeb9876772d6959c0a75f2dbc220644a48a56c5782c83c50410c9d7e4
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://crophysi.ru/wix?keyword=witchery+golden+chalk+not+working In PDF document text
    • https://gesogakit.weebly.com/uploads/1/3/4/5/134581759/7e4cf8a.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/iHjcKOb/33170369882.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/1ibvghG/terilexazotimegi.pdfIn PDF document text
    • https://cdn.sqhk.co/lexebogefaj/ixvDjgs/28831570941.pdfIn PDF document text
    • https://cdn.sqhk.co/zijatiki/dT8dZUS/transfer_case_fluid_color.pdfIn PDF document text
    • https://cdn.sqhk.co/refimadaraze/njbIhgo/54420581411.pdfIn PDF document text
    • https://cdn.sqhk.co/xewafazuk/qj3dggA/word_cookies_cheats_halloween_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/xogatijixe/0hhhggf/9848404834.pdfIn PDF document text
    • https://tukobigerokigab.weebly.com/uploads/1/3/4/6/134653943/205d49461cc4563.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/G8jcRjh/5616358035.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/4l8WOrB/19956548193.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvajuvewuj/f8jjgjl/xorutis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/juzowilipi/6838491383.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/jiratawekuwurovagupebuzux.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/cambridge_ict_practical_workbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/54503744260.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/recoleccion_de_datos_en_estadistica_inferencial.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB20 5084 bytes
SHA-256: e1ba2be1f619fd6a04184e543e8e0b9c2695d10a8eeaf278ad1a25e498e05463
font_01_sfnt_off0000dc73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC73 10504 bytes
SHA-256: 4d858cb2725b3355d4fa0d4366a18da0ffac8928fa63c857b19b0484c4d802b4
font_02_sfnt_off0001005a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.