Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6eb1f819f30e5b7…

MALICIOUS

PDF

64.5 KB Created: 2021-02-14 03:22:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1dde31a8db5501bd6bd0556b4f746357 SHA-1: c198e133f79c33b5bc1757c67772b583cebf85a4 SHA-256: e6eb1f819f30e5b78880673e6dddad1e2a813742676fce249f4590b4d48604fb
196 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
  • 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://bologen.ru/123?utm_term=harkins+theatres+yuma+palms+14+us PDF link annotation
    • https://cdn.sqhk.co/pujazojiwixi/ie8hbhh/15774461518.pdfIn PDF document text
    • https://cdn.sqhk.co/botikavanov/F0hfgj5/gif_to_video_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/fekimevexi/ChcFl00/42899557156.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370791/normal_5ff50b937d05c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417206/normal_5fd05e92b7bbf.pdfIn PDF document text
    • https://cdn.sqhk.co/gufemazibafi/gh61pOG/17656777957.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/iojbOji/talking_angela_hack_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/ibMjghi/digi_telecommunications_head_office_number.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/djcgije/snapseed_desktop_windows_full_download.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/egjhcgi/offline_video_call_app_download.pdfIn PDF document text
    • https://xadutodibuj.weebly.com/uploads/1/3/1/1/131164520/legakebaxo_mimefajomutir.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/hdhdpjj/66243317068.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/warapagefasovi/wirojiwirubijaxed.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/82498126603.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/html_auto_reply_template.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_off0000bcf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCF9 5324 bytes
SHA-256: 102f0896f59a641d20f7e9be659678c05a64d077c127944f54704e09d8d0ccfc
font_01_sfnt_off0000cef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF7 10864 bytes
SHA-256: ecc44c08342cdceb0ba932999686a982daccef5c0aba491d5e7b132c18c9e27b