Malicious PDF — malware analysis report

Static analysis result for SHA-256 10883f9aa51cd2d4…

MALICIOUS

PDF

71.6 KB Created: 2021-02-16 08:51:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ee666f281dd5c20f8ebf1ed3a5871e35 SHA-1: 01f96ea862203713cf926e7f24a9f71372986d62 SHA-256: 10883f9aa51cd2d463d606f648b17538fb738676d820382c364295ce977b91fd
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=porch+bench+swing PDF link annotation
    • http://bovizanaranofo.22web.org/dezukaguduviridon.pdfIn PDF document text
    • https://cdn.sqhk.co/banuluwopote/AYhfiie/musesugom.pdfIn PDF document text
    • https://vemenujobife.weebly.com/uploads/1/3/5/3/135399872/kulovapekunowike.pdfIn PDF document text
    • https://rosavipufek.weebly.com/uploads/1/3/5/3/135315232/f84f1d83.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/cPRgWDa/wukunavijoxor.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/ggjc9t4/roads_of_rome_2.pdfIn PDF document text
    • https://kavanezeso.weebly.com/uploads/1/3/4/4/134477356/waporu-tiketagositojop-tirebeboxe-kurivowasamur.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/jjgjjji/.pdfIn PDF document text
    • https://cdn.sqhk.co/rotexopapi/iavLih9/reincarcare_cartela_vodafone_direct_cu_optiune.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467005/normal_601c96c6c0c0e.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/suzujewa/done_for_me_punch_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/fivibegowanekikosaz.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/52366651864.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_off0000d927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD927 5052 bytes
SHA-256: 462438319139360346cd3562f17d8493b9b4017cb3933eafc65e57e34f2966ef
font_01_sfnt_off0000ea67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA67 11952 bytes
SHA-256: e00d97afd9925d855a3924ecc55df77394e7c891bb54f9381087e83a4ff5171c