Malicious PDF — malware analysis report

Static analysis result for SHA-256 52261abea70ec10a…

MALICIOUS

PDF

67.1 KB Created: 2021-02-26 20:28:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a58ebb01e5d71d7afafc9cf9c271097a SHA-1: 17b33c8c8805b839002da022507492a25db5108e SHA-256: 52261abea70ec10a7df0fe5a8a060a62c90fdde528ee6d2736df7811b0436102
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=rheem+hot+water+heater+manual PDF link annotation
    • http://dajexori.mypressonline.com/66998457991.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413469/normal_5ff668c44a863.pdfIn PDF document text
    • https://cdn.sqhk.co/wujugojuse/opjguii/business_manager_duties_for_resume.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369904/normal_6037038635f7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475859/normal_5fcc6d31e54c7.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/34316861797.pdfIn PDF document text
    • http://gagivukamuw.getenjoyment.net/kanobirirere.pdfIn PDF document text
    • http://ihsteam.ru/zazowejivetumuxzjz4o.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/wifiduxezo/great_expectations_oxford_bookworms.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/chain_rule_practice.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/lipstick_background_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/9336670683.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/34084188980.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/nsx_design_guide_for_small_data_centers.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/ashes_cricket_2019_free_for_pc.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_off0000cc6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6D 4848 bytes
SHA-256: 81b1f7c25622a48aa01c9d3d916faedb7bdc6c01db0748e2f454c643bae89834
font_01_sfnt_off0000dcca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCA 10148 bytes
SHA-256: e59c8ee007a904c5763f53b35de5d7c76e1fbf4c3f8b63dc3c88e5180673bd49