Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b5d17c3ba8bebac…

MALICIOUS

PDF

35.6 KB Created: 2020-10-03 02:45:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3bd4a268ef2bd5eea07b199be0673d2f SHA-1: e13490bda4aea47b1ee3f3331841ffe71711ebce SHA-256: 4b5d17c3ba8bebac2ff62bb8711e76d14438bce5f97940bfa7f90d93857a213b
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://ggtraff.ru/strik?keyword=trilogy+creation+of+the+universe+pdf In PDF document text
    • http://wowavutu.valleyalternativehealing.com/uploads/1/3/1/8/131856907/busamovazaxeke.pdfIn PDF document text
    • http://files.yellowmedicinereviewstore.com/uploads/1/3/1/3/131381109/0b4fc.pdfIn PDF document text
    • http://jugedax.clubviprec.com/uploads/1/3/0/7/130740450/3096677.pdfIn PDF document text
    • https://site-1037212.mozfiles.com/files/1037212/8512464817.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/kabakajuriropexolozegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2412/files/growth_hacking_sean_ellis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85c504e0-d95c-4bc9-81ca-5de74c0a4900/98237871719.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b533d381-29fe-46b8-b008-a95d7cedfb84/6453002864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/226bb068-521a-41eb-8a17-8e4f25fcb0ec/2384610908.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41B6 5408 bytes
SHA-256: 8832d3a824c3b65df93e652bb1e3f042ddd5f2592e7a074c2a333a1b72b1603f
font_01_sfnt_off00005417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5417 9364 bytes
SHA-256: 036deab2fbe2f7e1ee394cacb69fbaa3206e49d5b0e61903e4d7d8a2f26d917d
font_02_sfnt_off000073e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E5 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f