Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2c2a3fb99f2889a…

MALICIOUS

PDF

66.2 KB Created: 2020-12-24 14:51:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: e7219ea244bd6256d664ef289352dded SHA-1: d3bc18d87a370233f9dffa5ca1dbbed2edd2ea4b SHA-256: d2c2a3fb99f2889a4c57b873c9f32325b142daf38d62ca48bd7e80793d4f2689
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://cctraff.ru/aws?utm_term=third+eye+2014+full+movie In PDF document text
    • https://static.s123-cdn-static.com/uploads/4365546/normal_5fc59a1b315ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369651/normal_5fb7362955cb2.pdfIn PDF document text
    • https://cdn.sqhk.co/disidudi/ge3Vhfz/real_steel_movie_star_cast.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425483/normal_5f9d3c16358bb.pdfIn PDF document text
    • https://zilowefid.weebly.com/uploads/1/3/4/5/134510497/furowapaxu.pdfIn PDF document text
    • https://cdn.sqhk.co/netesatova/C6yieT8/75621106001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381534/normal_5f8ef1741c9b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494146/normal_5fe2490842ea1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427293/normal_5fbcc75bda992.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469101/normal_5fa46dc865d3f.pdfIn PDF document text
    • https://gugozakeku.weebly.com/uploads/1/3/4/5/134588211/xunitedugewapixojata.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5fa06075d5986.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458856/normal_5fb6dcaa90686.pdfIn PDF document text
    • https://kogavoduwesexup.weebly.com/uploads/1/3/4/6/134600755/pimulosuvokifivimed.pdfIn PDF document text
    • https://fipokotosa.weebly.com/uploads/1/3/4/5/134506619/tezefalulupa.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_off0000c49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC49A 5284 bytes
SHA-256: 036c55093e5a36b64b62288615b9a0e1a06e9c797220b6ddb1ebeb547028fb9f
font_01_sfnt_off0000d682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD682 11240 bytes
SHA-256: ffe97fffc1792d74be2e9eda321130646de0fc8e260e686feb6a48e5841bc706

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