Malicious PDF — malware analysis report

Static analysis result for SHA-256 68fa85d897e482ed…

MALICIOUS

PDF

75.4 KB Created: 2021-02-21 21:16:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7c09296efa5f8247d696c5c2142b2451 SHA-1: 36e68c668f717e1e7269aa37223f4a6c30e8fd66 SHA-256: 68fa85d897e482ed3065ef93078d809e894217fb500400faaed52ad05ee2420e
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://seumenha.ru/strik?utm_term=life+story+of+david+beckham PDF link annotation
    • https://cdn.sqhk.co/navozaxezini/jhSzTif/the_very_best_of_the_eagles_cd_songs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414696/normal_5fe517df40890.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/tibhbhe/best_wifi_analyzer_app_for_ios.pdfIn PDF document text
    • https://ruxibudowivuk.weebly.com/uploads/1/3/4/7/134728491/sover.pdfIn PDF document text
    • https://sivubatololux.weebly.com/uploads/1/3/4/8/134850937/novud.pdfIn PDF document text
    • https://cdn.sqhk.co/suxepemup/AajbAdi/nokinifejo.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/dPchaxb/wosudalazozik.pdfIn PDF document text
    • https://cdn.sqhk.co/fegozanodedu/2hdmgct/zejababil.pdfIn PDF document text
    • https://cdn.sqhk.co/pozedezupase/beFigpY/sijel.pdfIn PDF document text
    • https://cdn.sqhk.co/tabuguran/f4Tgct6/14089657509.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/hjVRjji/sears_going_out_of_business_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/fogibadeku/cjiific/jajonodimaxabo.pdfIn PDF document text
    • https://cdn.sqhk.co/sajatanugeg/gjcZWjh/prank_caller_id_faker.pdfIn PDF document text
    • https://damobupakul.weebly.com/uploads/1/3/1/4/131453350/25d0e6.pdfIn PDF document text
    • https://dirotigakavomak.weebly.com/uploads/1/3/4/2/134235834/3825d.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_off0000ea16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA16 5536 bytes
SHA-256: e0e6a559d8b12d59e8f03d3f3b2d320ad712165b3f4d86a4e015db421e4fafae
font_01_sfnt_off0000fcd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD4 10624 bytes
SHA-256: 3ad5651a5d97dee360dcaa2a40418e8a0bc54ba0ddc114669947d5ff6f65385b