Malicious PDF — malware analysis report

Static analysis result for SHA-256 215ccee2e10f7941…

MALICIOUS

PDF

71.8 KB Created: 2021-02-16 07:44:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9d648e848f2a3e498290f8897f9e6e57 SHA-1: 29d77c4e63ba45b578832f17ae03dda35ebcb04d SHA-256: 215ccee2e10f79416f2a56e98cb25c4df5030e3e392dd466f27e6b63f82cf97c
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=graphic+design+contract+work In PDF document text
    • https://static.s123-cdn-static.com/uploads/4391013/normal_6005d7d9bdd97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424645/normal_600fbf6bebeec.pdfIn PDF document text
    • https://gimelasu.weebly.com/uploads/1/3/4/5/134513778/2868320.pdfIn PDF document text
    • http://jiwitoletazadag.iblogger.org/66509036180.pdfIn PDF document text
    • https://dodemitewiv.weebly.com/uploads/1/3/1/3/131380707/xiluxebadu-kamav-nexadujesorofos-jolir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417137/normal_5ff129e7d3ab8.pdfIn PDF document text
    • https://zalefukonu.weebly.com/uploads/1/3/4/3/134346034/murutexizaj-finileloreg-lokel-duzosesuzegupug.pdfIn PDF document text
    • https://worivoka.weebly.com/uploads/1/3/4/5/134588103/levofowobu-kodejufi-gutototi.pdfIn PDF document text
    • https://fojozotewimoko.weebly.com/uploads/1/3/5/3/135324817/daxag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413363/normal_6018ee2197591.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379733/normal_5ff2b0c4e23d8.pdfIn PDF document text
    • https://guzepebizosi.weebly.com/uploads/1/3/4/8/134880367/lugotimako_dodim_wamemorufurer_loxemevat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502500/normal_5ffdbf75588ec.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/joterige/balinepuwosofakifinu.pdfIn PDF document text
    • http://gofirog.epizy.com/fujepetarenoriwe.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_off0000dd6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6C 5492 bytes
SHA-256: d93e379100f8468b564a2f7119c1369e13bf62fcbbe31c0e3387b6e72eb3309a
font_01_sfnt_off0000f025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF025 9944 bytes
SHA-256: 369ae7e2542149fa20829912a0de6a3faa12fded03f70e6e00248c7cea6f689c

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