Malicious PDF — malware analysis report

Static analysis result for SHA-256 0650fbfae98c8d49…

MALICIOUS

PDF

75.3 KB Created: 2021-02-12 18:19:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a0b7f5d087c064f86ad64c162e3c988f SHA-1: f62404c517dd819bab399a9a9bd44c497b51d4b7 SHA-256: 0650fbfae98c8d498a22de6ab906e51f53026d6baeb0d6cf7e668b276171d946
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://bologen.ru/wb?keyword=baby%20song%20ming PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375350/normal_5ffffad38120a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482012/normal_60065f2e58c85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422906/normal_5fe51a8462b71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449781/normal_5fe49735ec677.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448535/normal_5fe1327883d70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415291/normal_5fe319fd79246.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410418/normal_5fc70c89c2dd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451544/normal_5ff9742a354bc.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/janodojivi/hr_behavioral_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/catalogue_cuisine_ikea_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/zevokuzadinedunopobedod.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/prowl_transformers_tcg.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/prentice_hall_conceptual_physics_textbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/sorting_algorithm_in_c.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/16607981945.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_off0000eb2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2B 5168 bytes
SHA-256: 92253a265c25c88089a977f08765851f24498d519ecd3c2a20039df59e3bd7b7
font_01_sfnt_off0000fcbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCBF 10596 bytes
SHA-256: 5c3d4a0ea34c5ef05adce1ef10d5757aa7cb95925b14aa6a0e06fad4488ea4b6