Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f63355008ece3a3…

MALICIOUS

PDF

72.7 KB Created: 2021-02-12 00:14:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 73f7d7e0d1ef73b18e9851a8ce1a2926 SHA-1: 650cefe6f597e643dff36238bca222524ce98293 SHA-256: 3f63355008ece3a3d9dfbe2baf8e6fe1ac9be8fb51f970689593b58c76df5c59
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=blobz+guide+to+electric+circuits+worksheet+answers In PDF document text
    • http://evromotors.net/tamudalizagidajiviyux5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453337/normal_5ffb24caf2563.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392237/normal_5ff9eb99159cb.pdfIn PDF document text
    • http://xezuviwejugume.22web.org/carlito_s_way_film.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_60239f84d373c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_60161899f1812.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/mekonulegipero/46747085889.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/bluetooth_logo_vector.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/zozafuwesawusa.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/kitenonamujavonoli.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/gibod.pdfIn PDF document text
    • http://suvokejixu.epizy.com/chunks_malayalam_movie_free_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/xaxenumogubilubuzo.pdfIn PDF document text
    • http://viropamel.rf.gd/32950371860.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/my_autograph_telugu_movie_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/guramigipuloluke.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_off0000ddb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB9 5596 bytes
SHA-256: f56764479e8695fce042a0a2731d1449f33acab57b72a6a4ca1dfba51fc6c8d0
font_01_sfnt_off0000f0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E1 10768 bytes
SHA-256: 5c2897de34f9980a12eb79aa8ecc2763952be668e8315b4c3fc16b030b3e4081