Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa9fdce41f7e00e1…

MALICIOUS

PDF

73.0 KB Created: 2021-03-03 14:46:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 461c0b48604b6423655ec5194e9b037a SHA-1: ae95551c898273d11d8cea0fdc625ef893fd6a3f SHA-256: aa9fdce41f7e00e1d4181d37c58b471df8ff7309f6404c3834e9d7ca9f67a25f
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wix?keyword=hl+slim+pro PDF link annotation
    • http://nonowun.mywebcommunity.org/who_writes_the_script_for_the_big_bang_theory.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367627/normal_5fe537f0defb2.pdfIn PDF document text
    • https://cdn.sqhk.co/tevimuwijile/japHigL/padadibofeval.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406228/normal_6017c3e26fe99.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuwaxisiw/hfsicjd/34598559681.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/XggiaLf/capsaicin_pepper_oil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368506/normal_5fdb6518057b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387224/normal_602b35cc56f8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366973/normal_5fc779b03208f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454290/normal_5fc7241a143fc.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/wiwamoxamo/consumer_reports_best_used_suv_under_10000.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/beef_jerky_dietary_information.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/10202576526.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_off0000e465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE465 4716 bytes
SHA-256: 392ac5c3733ea6a025281452b1dd669fcdfa5f5de9bf9ab124495696b9112846
font_01_sfnt_off0000f453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF453 10308 bytes
SHA-256: 58bfc2143f8895c04b2619114f5e01dc20c9b378fbbbaeaad7c40677d10477df