Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a12ba068cd3ac5…

MALICIOUS

PDF

66.5 KB Created: 2021-01-27 09:21:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e18f8ba6d706a9d92c84d4b17a4ee772 SHA-1: 4efebfc0d97013c8124303f16c3feefdf73f8be1 SHA-256: 69a12ba068cd3ac54076d67d3437199de3cffac54640d0f66518c7a35c48f1ab
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://leonvi.ru/wb?keyword=parrot%20wallpaper%20hd%20photo PDF link annotation
    • https://cdn.sqhk.co/xedasuzefer/gg4jgjj/table_tennis_doubles_rules_ittf.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/hhWZrib/harris_jayaraj_telugu_songs_collection.pdfIn PDF document text
    • https://cdn.sqhk.co/xolafunodo/haNiehi/harvest_church_riverside_jobs.pdfIn PDF document text
    • https://dolibaradodusop.weebly.com/uploads/1/3/4/5/134595809/tilamunen_mitaguput.pdfIn PDF document text
    • https://cdn.sqhk.co/nuwezomu/migds1m/dunkin_donuts_menu_prices_box_of_joe.pdfIn PDF document text
    • https://dumetokewip.weebly.com/uploads/1/3/4/3/134394823/fewekuxeg.pdfIn PDF document text
    • https://cdn.sqhk.co/votexeruwiti/zDjahiK/age_of_empires_strategy_tips.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/9Cjh0QS/lisovobivuximaka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469828/normal_5fec01850e47f.pdfIn PDF document text
    • https://cdn.sqhk.co/sunawopi/SQhgjcC/80523754663.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/salosibejodod/zevopazusow.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/87597275392.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/triangle_word_search_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/graphic_design_portfolio_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/17802299643.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_off0000c783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC783 4960 bytes
SHA-256: 4f7121b6f9b6f684fe8d483d795674744a8685fb5c89a76e42bfe7a4bbc32218
font_01_sfnt_off0000d868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD868 11168 bytes
SHA-256: 9a33eb710fc4bdd58b90bff9cc1ef49569db6aa2e22092a15c598531071c8fd0