Malicious PDF — malware analysis report

Heuristics 7

• 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.
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• 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://jottigo.ru/strik?utm_term=how+to+pass+algebra+1+keystone PDF link annotation

  • http://100naturals.fun/android_notification_channel_example_githubmlqqo.pdfIn PDF document text
  • http://privateguardingserviceagainstdanger.site/wafasitowazupu2ubt3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380383/normal_60329e896ff85.pdfIn PDF document text
  • https://varemajog.weebly.com/uploads/1/3/4/5/134585454/4424260.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4453335/normal_602ac059407e6.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4391303/normal_5ff0bf794fcec.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4384831/normal_5ffe9b8f5e118.pdfIn PDF document text
  • https://nuzilemuf.weebly.com/uploads/1/3/4/4/134479477/sodisoxiwuvine.pdfIn PDF document text
  • https://losujawidejope.weebly.com/uploads/1/3/4/3/134310111/9196202.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4366400/normal_5ffa30d04a32b.pdfIn PDF document text
  • https://rutizinudepedo.weebly.com/uploads/1/3/4/4/134483735/1515494.pdfIn PDF document text
  • https://sinekamawo.weebly.com/uploads/1/3/0/7/130776883/be901de2f493515.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383571/normal_603d8c360d65d.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4485822/normal_60071e6a1fbe4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4448539/normal_601ebc66af73a.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/dovulavavo/appraisee_s_comments_on_performance_appraisal_sample.pdfIn PDF document text
  • https://f0198b83-f3fe-41b4-8315-bacd7eabb238.filesusr.com/ugd/2b3f46_4aebfb543d134bdc9b9554f5e9c834d1.pdf?index=trueIn PDF document text
  • https://2daccc73-8708-4113-a26a-4f38906335d9.filesusr.com/ugd/f65175_c3cddb605fec4488b18c7e72ca1aab33.pdf?index=trueIn PDF document text
  • https://s3.amazonaws.com/perurulexi/atmel_studio_6._1_64_bit.pdfIn PDF document text
  • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_a5fab30e3db54652a3f98b4cd0486c9a.pdf?index=trueIn PDF document text
  • https://a6132035-7465-4fe4-be4e-2faa96c22dab.filesusr.com/ugd/cf950b_630b5a71ceb448c198bddb717829191e.pdf?index=trueIn PDF document text
  • https://s3.amazonaws.com/sezewu/who_has_prepared_thanksgiving_dinners.pdfIn PDF document text
  • https://s3.amazonaws.com/regovadeje/state_bar_texas_form_promissory_note.pdfIn PDF document text
  • https://a40b6db0-1679-4e03-879f-ac5827b9aa7d.filesusr.com/ugd/dba42a_1f82ad363ab34217beea79d874fbcf8c.pdf?index=trueIn 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

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