Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2494fc62272eb40…

MALICIOUS

PDF

42.2 KB Created: 2020-10-09 23:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 123afc7246e900025958c367b3e4002a SHA-1: 28f5615a2de93252addc6e629971feb702d877ba SHA-256: b2494fc62272eb4099c11b5629183886becceb7c6d6cdf1cb4aa925d6d2ed2d3
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://gettraff.ru/strik?keyword=man+2.0+pdf In PDF document text
    • http://files.townofwillsboro.com/uploads/1/3/0/7/130739740/8571779.pdfIn PDF document text
    • http://files.lizsowersburas.com/uploads/1/3/1/6/131636755/7206540.pdfIn PDF document text
    • http://files.houstonforeclosureagent.com/uploads/1/3/0/7/130775725/duzupil.pdfIn PDF document text
    • http://files.kindnessisfoundation.org/uploads/1/3/0/7/130775405/bizesele-mixibosen-rizojamav.pdfIn PDF document text
    • https://site-1037196.mozfiles.com/files/1037196/74880929948.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1735f278-4de4-4a86-b518-ebfeb68a1df3/49968234055.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41a5f3bd-95a2-49d7-ad8a-f342e9939cea/86954893156.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef3d0d47-d98b-4a66-879b-de124334564d/53621231188.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f374de5c-4110-47f2-ba56-dd2675518a5f/32385495013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7782/4412/files/wow_macro_castsequence_reset_target.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2627/6771/files/camp_pinewood_apk_en_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6567/8755/files/dragon_ball_capitulos_de_relleno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/vegolokugoz.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_off00006615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6615 5040 bytes
SHA-256: 5af29f16bc20163a2510f949456795a6f6fd84f0aae81b539cc078a2c620a84f
font_01_sfnt_off0000776b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776B 10908 bytes
SHA-256: 6056822ed799218510cf7a4cb24dc17f1feda81b126dd610e41d4cb28aa5d498