Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e0985bbacbb7110…

MALICIOUS

PDF

71.7 KB Created: 2021-02-25 23:07:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 20508613becbdfe2913cc04a104005ae SHA-1: 86605429ebbd902219e380192a7c0e042497e92b SHA-256: 5e0985bbacbb7110971f06d48c27c556c79d83bc4e1e24c097c07a66e446ed07
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://seumenha.ru/strik?utm_term=classical+conditioning+theory+meaning+in+hindi PDF link annotation
    • https://rikudebuwixe.weebly.com/uploads/1/3/4/5/134589128/vigigexa_rutasogux_nejaw.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/cYghehc/steven_universe_song_lyrics_other_friends.pdfIn PDF document text
    • https://cdn.sqhk.co/tejurorado/1gjIih7/radiant_church_surprise_az_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/gozigawefo/eSgfgeh/most_profitable_small_business_ideas_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/dojidavos/fUUIfqT/97946566298.pdfIn PDF document text
    • https://cdn.sqhk.co/nejajevafode/igfhbqa/ryobi_pressure_washer_wand_home_depot.pdfIn PDF document text
    • https://kujuxase.weebly.com/uploads/1/3/4/5/134584075/8844115.pdfIn PDF document text
    • https://cdn.sqhk.co/fuludasowipu/cgijdcs/xipigavipafimewe.pdfIn PDF document text
    • https://cdn.sqhk.co/ritasuxa/AheeFSJ/33786623069.pdfIn PDF document text
    • https://cdn.sqhk.co/piwizogir/ibb0jeT/76253557723.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/79672108392.pdfIn PDF document text
    • https://wisufisuzok.weebly.com/uploads/1/3/1/3/131383924/jijokufuwomuzigoj.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/wujixus/14550503838.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/kay_jewelers_ring_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/food_chain_pictures_and_information.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/azad_kashmir_university_date_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/what_businesses_are_open_in_sonoma_county.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/66603923356.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_off0000dce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE8 5360 bytes
SHA-256: 698f29b348d027fd9f28e9b43cd9171a87c41aad50989e9be5921eca2a87d65c
font_01_sfnt_off0000eef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF6 10088 bytes
SHA-256: 631fb849aa47dd8109295916c5fc1e05968a23b9a65865459fac060366d5680f

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