Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ce67ed0e084f2d…

MALICIOUS

PDF

69.0 KB Created: 2021-02-15 22:42:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f247a354fe014791aafc6f648931f1fd SHA-1: 08e38677476bc821a023e1a926a5c8fdb72fa642 SHA-256: 45ce67ed0e084f2d7de8cc4f4d319570fcb4225d7584c624e2dde0dbf6eb939a
196 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
  • 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.
  • 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://bologen.ru/wix?keyword=gizmo+student+exploration+nuclear+decay+answer+key+pdf PDF link annotation
    • http://fulusixavopowem.iblogger.org/sahih_bukhari_free.pdfIn PDF document text
    • http://gebiponakefijar.22web.org/android_layout_background_color_transparent.pdfIn PDF document text
    • https://zepukuliro.weebly.com/uploads/1/3/5/9/135964459/rukaw_zupafenavisoj_rukuvi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487186/normal_5fcd90ea0c8e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388407/normal_5fd64ef946f54.pdfIn PDF document text
    • https://rotexutipuz.weebly.com/uploads/1/3/5/9/135966590/zevez_kumiluga_viruzisigu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415531/normal_5ff76f50123e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385021/normal_5fe01e54098ba.pdfIn PDF document text
    • https://pozategon.weebly.com/uploads/1/3/2/6/132695347/8356235.pdfIn PDF document text
    • https://rasizuxuner.weebly.com/uploads/1/3/1/3/131378923/07b774548eb4b.pdfIn PDF document text
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/d34aa30.pdfIn PDF document text
    • https://bewevirat.weebly.com/uploads/1/3/1/4/131437926/xobedubapi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477635/normal_5fe7d8cf3d961.pdfIn PDF document text
    • https://xosofanukofupa.weebly.com/uploads/1/3/4/8/134879033/bofuvukejado.pdfIn PDF document text
    • https://fabegobidik.weebly.com/uploads/1/3/1/4/131437275/kevodu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366018/normal_5fe4fe4c236bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://badiwofotafazol.epizy.com/batman_4k_wallpaper.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_off0000ceb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB3 5708 bytes
SHA-256: 8160f23422b87e1e40b2db861b21227969d21f3367eeb22bd488fdad4bc0b93d
font_01_sfnt_off0000e23d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23D 9940 bytes
SHA-256: 1761a26d22db2d6d6a6528eac78d31d1c07dea735057a357c951c8efb9c2691c