Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d55b6bc7b51cc05…

MALICIOUS

PDF

64.7 KB Created: 2021-01-30 11:45:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 95c7ea03a5c2c675d3eb15914165dceb SHA-1: 12a0e9d76f65bd3dbb4cc6c8d2f044102b1104cf SHA-256: 0d55b6bc7b51cc05459eea476e26c2d9852d30511b5206d4c0b5954f7da6e5f7
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://yafferge.ru/123?utm_term=popcorn+time+apk+2018 In PDF document text
    • https://cdn.sqhk.co/feguzuvubut/jhfiiij/impulse_response_library_guitar.pdfIn PDF document text
    • http://sikutamilom.iblogger.org/47175261145.pdfIn PDF document text
    • https://xasukibumit.weebly.com/uploads/1/3/4/7/134749231/335637.pdfIn PDF document text
    • https://xigologilajuveb.weebly.com/uploads/1/3/4/6/134672854/180440daf846663.pdfIn PDF document text
    • https://nadusada.weebly.com/uploads/1/3/0/7/130740262/ziwomelore-gusajuki-nadovafow.pdfIn PDF document text
    • https://siwepuxerit.weebly.com/uploads/1/3/0/7/130775843/cc385c967b.pdfIn PDF document text
    • http://particulieres-societegenerale.best/posedoscta.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/pajeriramal/43173545830.pdfIn PDF document text
    • http://bojefej.epizy.com/jaxuted.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/jezemoret.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/80306512739.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/fanaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/39388301200.pdfIn PDF document text
    • http://podapuleleg.epizy.com/36963034778.pdfIn PDF document text
    • http://fonumorawupako.epizy.com/19494504140.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_off0000c11e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC11E 5456 bytes
SHA-256: 9ce9a2b2ae9258107a0bcd388cf3bb831fd5682d448e77594b20479fa2755f81
font_01_sfnt_off0000d39b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39B 10172 bytes
SHA-256: 70460f1d09ed9a2b461375dc7243660627fcf7e542c2811c356857b48fce7336

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