Malicious PDF — malware analysis report

Static analysis result for SHA-256 d08868f441d73b43…

MALICIOUS

PDF

68.4 KB Created: 2021-02-23 00:33:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 28acb01b70f2c03fac10031689769589 SHA-1: 18d77a57c40a751efdb9980cfa359035cfb009b6 SHA-256: d08868f441d73b43a21153b50d0d2e7e25f4d731a957445af4d73c7923baadfd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wb?keyword=crafting%20and%20executing%20strategy%2017th%20edition%20pdf%20free%20download PDF link annotation
    • http://levelupguild.com/sample_comments_for_students_performance_in_reading12pom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457570/normal_5fcc560f98603.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382189/normal_5fe4d4e5033b6.pdfIn PDF document text
    • https://cdn.sqhk.co/jesisuvov/6Riejcx/22990895106.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371261/normal_5fcb0f9045b73.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/hhjjHhd/serapurexasufixizoxapafak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480755/normal_6020920d2b637.pdfIn PDF document text
    • http://0fruit.space/xodotonokobowiu98gk.pdfIn PDF document text
    • http://luminar2-download.xyz/fleece_bed_sheets_target7v88u.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/pisik/pedubokananeso.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/73967572701.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/77986588621.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/apple_iphone_8_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/86550024388.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/action_jackson_movie_hd.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_off0000ccec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEC 5716 bytes
SHA-256: 58f3e600b36856d8a5d2a134e1e89f71fd757053748fe99b433ebe216e32b49f
font_01_sfnt_off0000e087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE087 10584 bytes
SHA-256: c01b4eb5220857e183df1a3eb19d8caa80b9ba8772ef5d9f3a841f53ec3b3dbf