Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee460617112edc6b…

MALICIOUS

PDF

73.9 KB Created: 2021-02-14 20:52:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f9fbe0f064fb56d63c575f1c850e68a8 SHA-1: c8aebee14b348a8aa98e60cd74e745c1fca885bc SHA-256: ee460617112edc6b42992e68ec5a7ad0da131eeae766e3179f701e4ce48c4a76
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/123?utm_term=switch+stealth+vibracell+guitar PDF link annotation
    • https://vupebuxotilejo.weebly.com/uploads/1/3/0/8/130814562/bd0bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369769/normal_5fe84f9c221d5.pdfIn PDF document text
    • http://pasendapp.online/vinevatujomurewujoxrqt1.pdfIn PDF document text
    • http://ideal-it.fun/pediatric_occupational_therapy_salary_by_statez82nz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498678/normal_5fd308a568859.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447450/normal_60013f1cccc45.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/sowewazulejewi/pamikozigoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/duxobogedosupobigog.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/wwe_smackdown_vs_raw_2011_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/industrial_revolution_webquest_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/edit_business_card_template_microsoft_word.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/kafexafo.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/add_c_to_android_studio_project.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/22634295358.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/zoxafokajixuxal.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_off0000e325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE325 5456 bytes
SHA-256: f2d71044ee53acbe448c6f9aeb3bd42a6d6cbba54dba30e5bbd775d2a80e478b
font_01_sfnt_off0000f5c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C9 10980 bytes
SHA-256: 5559219b394dc2f52fbe6f0544a6bda0e3fb31efc89e614756d03a0c76fb6537