Malicious PDF — malware analysis report

Heuristics 9

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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.
• Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
  Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://zaloposigino.weebly.com/uploads/1/3/0/7/130739621/5989430.pdf.
• 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.
• Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
  Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
• ClickFix social engineering attack high SE_CLICKFIX
  Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
• 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://crophysi.ru/wix?keyword=a+referral+was+returned+from+the+server+amd In PDF document text

  • https://zaloposigino.weebly.com/uploads/1/3/0/7/130739621/5989430.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4459787/normal_6016ce59a5606.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4389387/normal_6015cd8912e1f.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4368969/normal_5ff9b7b1e424d.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4422147/normal_5fec658073d0d.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/wemazun/lesekuripebotodirex.pdfIn PDF document text
  • https://s3.amazonaws.com/kakef/conformation_of_cyclohexane.pdfIn PDF document text
  • https://s3.amazonaws.com/fewunadupop/jaworozupidisiluze.pdfIn PDF document text
  • https://s3.amazonaws.com/jejulurowev/34096735420.pdfIn PDF document text
  • https://s3.amazonaws.com/kegubinefuda/kupufigu.pdfIn PDF document text
  • https://s3.amazonaws.com/nerugiraxura/xisomim.pdfIn PDF document text
  • https://s3.amazonaws.com/jimugivos/golden_sun_2_class_guide.pdfIn PDF document text
  • https://s3.amazonaws.com/tazopaju/all_cheat_codes_for_pokemon_emerald_android.pdfIn PDF document text
  • https://s3.amazonaws.com/tunenijexe/22_se_srabon_bengali_movie_songs.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

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