Malicious PDF — malware analysis report

Static analysis result for SHA-256 4282633ac1a2eb9b…

MALICIOUS

PDF

76.4 KB Created: 2021-02-18 19:02:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d8b5b4b30b7fe3322613ef63f7fa2a3f SHA-1: ff24998e599139daf027469471e06fb95a57dd57 SHA-256: 4282633ac1a2eb9b7059efa7b0a86046c1e460de94beea07e08515ee1ad317c7
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://bologen.ru/aws?utm_term=nordictrack+c900+pro+specs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379038/normal_5fcf0701e2bbe.pdfIn PDF document text
    • http://sethel.xyz/dufosuvuvabuzojlmfwx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389823/normal_5fe924056282a.pdfIn PDF document text
    • http://idealica-italy.site/bridges_math_4th_grade_answer_key69ryi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386834/normal_6009206327dc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379970/normal_600290f7cb439.pdfIn PDF document text
    • http://sberpodarok2020.online/199855327669xapq.pdfIn PDF document text
    • http://paksorond.xyz/acetil_coa_carboxilasaq5rxn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408865/normal_5ff2163f8aeb5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374177/normal_5fce05a317264.pdfIn PDF document text
    • http://lifegirls.site/carl_jung_psychology_and_alchemystoxt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465131/normal_60008728522c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380068/normal_60048d75513bd.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/sepawi/barcelona_valencia_match_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/dark_blue_dresses_short.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/rue21_application_login.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/low_poly_blender_models.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/bihar_board_12_result_2019_marksheet.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_off0000ebd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD3 5364 bytes
SHA-256: 196dd2797dbc4744660b3e9cfafa1513cd799019261a41896a397d97169b0b00
font_01_sfnt_off0000fe20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE20 11552 bytes
SHA-256: 7c120b8f859869305e9c9da222108016c612480123a1c75585bf9468972ae1fd