Malicious PDF — malware analysis report

Static analysis result for SHA-256 e63abe5b3d32f425…

MALICIOUS

PDF

43.7 KB Created: 2020-10-08 23:12:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: bd82a1ed59939761e7f9e925e10b4310 SHA-1: f2aa3dbfe420d6846ff0cee86b63b1712d284e38 SHA-256: e63abe5b3d32f425770cbb08c01611bee39fd26f52fe582982d7657ab0470641
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://cctraff.ru/strik?keyword=how+to+trade+in+stocks+by+jesse+livermore+pdf In PDF document text
    • https://site-1039227.mozfiles.com/files/1039227/98613707931.pdfIn PDF document text
    • http://files.terapiaregresiva.org/uploads/1/3/1/3/131383646/5389604.pdfIn PDF document text
    • http://files.rcknteachn.com/uploads/1/3/1/3/131383297/gorogododox_vowetekunagu.pdfIn PDF document text
    • http://files.holt-art.com/uploads/1/3/0/7/130776763/remipinoduv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7747/5233/files/ar_books_answers_for_twilight.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5015/3622/files/bixewas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/9445/4687/files/we_shall_not_be_moved_chords_mavis_staples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93184c98-3899-43a3-8446-d773d6724d98/vutakixakewo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc442667-6eec-488c-aed8-27b2e96aa5e4/41933331084.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ffdb035-0c7a-46c3-892e-a7452f26ece4/timalolugifonunelawilab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abd85dca-1c86-49b3-bd29-fcd4918ec89d/14748657205.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84cbbee6-553d-454e-9c71-a60ed08f0d4f/vixopifi.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_off00006ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD6 5796 bytes
SHA-256: 9934127301910ed0301c90a6fe9d4f5d9a0c743353a17a43c0c74fa6c621a002
font_01_sfnt_off00007e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E98 10292 bytes
SHA-256: a22c4c965ecedfba655eeafd5ea91c0d3d02d89b1454c24289b1af748e83b8ca