Malicious PDF — malware analysis report

Static analysis result for SHA-256 474021d8c443eaba…

MALICIOUS

PDF

70.3 KB Created: 2021-02-16 11:42:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 49858ad3703912df47a8a7c170dd585e SHA-1: 94b785ebd001e8851563d38273bd729a78aeb070 SHA-256: 474021d8c443eaba8e0f18c7ffa55b3ee83518c213f1818d7a712142491d4f06
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/wix?keyword=lbj+elementary+school+johnson+city+tx PDF link annotation
    • https://cdn.sqhk.co/mikevoponage/giwmib1/34140234437.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405459/normal_5fe0df8bd3c9d.pdfIn PDF document text
    • https://cdn.sqhk.co/dogovonediwa/ahdsmje/easy_drawing_sketch_step_by_step.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416316/normal_5ff8b969946a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484356/normal_5fd76e30ac4a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383806/normal_5ff545db09f1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380675/normal_600fd8850d1d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380522/normal_5ffbb86ded8a6.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/piradi/good_morning_photo.pdfIn PDF document text
    • http://sotexazonilot.rf.gd/tamogusap.pdfIn PDF document text
    • http://jesebikalag.epizy.com/aravinda_sametha_anaganaga_song.pdfIn PDF document text
    • http://widuxetikos.epizy.com/juvopi.pdfIn PDF document text
    • http://nowivopikuzud.epizy.com/biochemistry_by_h_stephen_stoker.pdfIn PDF document text
    • http://mafatiwi.rf.gd/des_1210-_28p_datasheet.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_off0000d735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD735 5364 bytes
SHA-256: 397c59f9e2561e577169fd78ca8381fe1bbb11d4736da60e78d3770c670bc629
font_01_sfnt_off0000e955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE955 10280 bytes
SHA-256: 2b3f9b30cf472540eadf441741935d969638847e1719da0dd2035328ec1c651c