Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7da9ba08fc74ecd…

MALICIOUS

PDF

66.3 KB Created: 2021-03-08 00:46:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8bce412e31287a0f1225389eb694205a SHA-1: e02eb381c7a359855bddb6c2bdcec597ee6a3f19 SHA-256: f7da9ba08fc74ecd7e6642eff4eb250fc2090ece78144fd8a2a6e402e2394235
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://xajibur.ru/wix?keyword=pick+3+sum+it+up+results+nc PDF link annotation
    • https://cdn.sqhk.co/jinubodilev/hc0hbij/jujorekazedi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473359/normal_60318fab6ad23.pdfIn PDF document text
    • https://cdn.sqhk.co/zevolazezag/bgbgggi/roman_empire_invasion_map.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485568/normal_5fdb8ffbaa8fc.pdfIn PDF document text
    • https://nomabedipami.weebly.com/uploads/1/3/1/4/131437379/d2659bcc820cd39.pdfIn PDF document text
    • https://sulagumafiwez.weebly.com/uploads/1/3/1/3/131383207/ae9c2f2bb1b.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/lixasifasi/html_form_without_csrf_protection_apache.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/85575329129.pdfIn PDF document text
    • https://08b4a39d-fa16-4eaa-91be-ae90003cacb9.filesusr.com/ugd/237bf7_f9c025dbc6c145c8b7e0e7239219efc8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/what_is_ruths_job_in_a_raisin_in_the_sun.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/telegisomuripuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/72697145504.pdfIn PDF document text
    • https://1ffb5d6c-d890-49e0-9b87-dc10fbfa49e2.filesusr.com/ugd/8bc2a6_ae505cbc7b8842d8abff004a75d2ab61.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jobavo/english_translation_of_holy_quran_with_arabic_text.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/free_printable_personalised_letter_from_santa_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zafibimutadoti/podigutojibexazivenubu.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_off0000c7d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D3 5100 bytes
SHA-256: 8a2e22ec86a28b3c86c23b5ce6ae86efb48b79549ba88a178af47df2b4aa7c74
font_01_sfnt_off0000d921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD921 10380 bytes
SHA-256: 5866f50cf27c7c1533b17c087ba16b2fec89d4a58d0686610d29d9b2ab9b3271

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