Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d9245bae3093509…

MALICIOUS

PDF

71.5 KB Created: 2021-02-28 05:57:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 226ca1d243ceb9f6041e65792a580e86 SHA-1: feabcea86ab7426610e5e96ed451ad8abbb64fd6 SHA-256: 9d9245bae3093509d1b75dbe38a23421706ca1ffe2f44551e47f35624e6e2a28
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/wix?keyword=clinician%2527s+pocket+reference+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378167/normal_5fd2e6c3b3533.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419235/normal_60011e0769fbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410952/normal_60222320b2999.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406241/normal_6023f66f62750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403816/normal_6029d296d3cf0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387709/normal_60031b9fc49de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485001/normal_5fe4e97013cb0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454182/normal_5fd080f63187e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492892/normal_603af2adbdf49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387825/normal_5fcc654a7c7ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384469/normal_6034f3ffef1bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471234/normal_5fda4e9398fc2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489440/normal_5fe4f73389ac5.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/dejolavubukugeb/netflix_apk_android_4._2_2.pdfIn PDF document text
    • http://pezazutosoxa.epizy.com/chemdraw_professional_17.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/abstract_for_cryogenic_grinding_seminar_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/zugabagevemajopilu.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/89015498284.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/smadav_antivirus_2019_free_pc.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_off0000db9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9D 5152 bytes
SHA-256: 9ab29ff5b392965bc9a8847b8db44e9b62481577fcbe39f687f45a3339d74a73
font_01_sfnt_off0000ed3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED3A 10196 bytes
SHA-256: db85027d070806108409366f8c46bffffc898481dbd7423ba1dd90558642187a

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