Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9d6f10b0ca28802…

MALICIOUS

PDF

70.5 KB Created: 2021-02-14 08:57:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e51db84b5d3e27bae20ad4970a7c23ba SHA-1: 2ff82e584b3b4ffe102ebcc41d21288be4be414b SHA-256: a9d6f10b0ca288025bfa45040bf4322f79190a95ed5088c08df36adb69ed1d30
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=wwe+2k14+apk%252Bobb+download+for+android In PDF document text
    • https://static.s123-cdn-static.com/uploads/4462681/normal_5ff021a4b0ab5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374696/normal_5fdb8e4bc2500.pdfIn PDF document text
    • https://binigikuvoloxog.weebly.com/uploads/1/3/5/3/135332024/nilirulanin_gejuwudume.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376850/normal_5fd0e7af28f97.pdfIn PDF document text
    • https://rezopagukivuru.weebly.com/uploads/1/3/5/3/135307961/7995003.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/thcsfhg/hollywood_box_office_collection_all_time_wiki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391602/normal_5fe3cd03f064d.pdfIn PDF document text
    • https://xewulatejema.weebly.com/uploads/1/3/5/3/135345986/4137188.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459631/normal_5feebd54383aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383915/normal_5fc8a4b386062.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446030/normal_5ffd828b6e600.pdfIn PDF document text
    • https://lisogawe.weebly.com/uploads/1/3/5/3/135312855/269615.pdfIn PDF document text
    • https://cdn.sqhk.co/jivazufevi/hdheiea/47757485050.pdfIn PDF document text
    • https://cdn.sqhk.co/jepipovi/XLXGyhh/64701497196.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/zedilegol/71144816271.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/cardiotnicos_farmacologia.pdfIn PDF document text
    • http://namidonom.epizy.com/66264188209.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/25487218405.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/58668406149.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_off0000d6ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AC 5440 bytes
SHA-256: 3b637173a63ceaa00eb945adf83af11c88b94e6008c2a843205456828873a8ef
font_01_sfnt_off0000e95d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95D 10180 bytes
SHA-256: bf9818a1dd2286f8f115b7e1f6080f69f2cc700367d0e501fccc7074ee28f946