Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6a7e556a5b2770…

MALICIOUS

PDF

39.8 KB Created: 2020-10-29 17:51:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a0efedde575c189edfaeee91d3e7b66a SHA-1: 735551e1bb8c6ea453c8372a9aa3149f5502e321 SHA-256: 9e6a7e556a5b27708108bdcb60410e47694d0c248051a6201c76fddbb296ef28
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=red+wine+mushroom+sauce+for+pork In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1515306.pdfIn PDF document text
    • https://kazigujexumakul.weebly.com/uploads/1/3/4/3/134320364/wukizixisagimusido.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/6472568.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/1/0507/0821/8055/files/kuxifojel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4346/2561/files/zip_files_opener_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0e73773-c0a3-4e37-9dfb-431684feb212/78430810650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0080/2724/files/haier_hpp08xcr_8000_btu_portable_air_conditioner_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4004/5725/files/probabilidad_clasica_ejemplos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90078c45-08e0-4439-bdab-5c21effbf9ac/chakras_wheels_of_life_anodea_judith.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4b1a094-65de-4f74-8828-65c89e13f3db/sefegeniduru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9852364-a645-4c8a-a4e5-ec5c43f0023f/25672992687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e0e3948-d5c5-4a76-94f6-ca727ea8002f/soridapotuderagozibinel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff306b38-edef-4da3-8e89-2ce089aba9da/89075213993.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_off00005d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7E 5524 bytes
SHA-256: 480f457a80612cc80350a6912005d7fce63d572f2d9b74559275b1457ee03c8d
font_01_sfnt_off00007037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7037 10112 bytes
SHA-256: 9f21e1a24c30b6fc0ce551d69efaf106d806adc2904c11f16dd440d1a3c4bdf7