Malicious PDF — malware analysis report

Static analysis result for SHA-256 92624bce2eadaa75…

MALICIOUS

PDF

41.1 KB Created: 2020-10-14 06:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: de246683dfc42baef4301f1757e32a9f SHA-1: f26c16eee2c610fdf7835444bdd690424f293fb4 SHA-256: 92624bce2eadaa75d4893478f53961091d98cd24d4e0179ef07252380be69a96
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=asphalt+street+storm+mod+apk%252Bdata+download In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/10610.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/roruj-fegedevovelere-zexomojikazi-rewubujelem.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/lokujevu.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/vanojiraxajerubefiza.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3731638.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bigunurusipota_vovavubavuw_malolipesafa.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/1/0481/4146/7799/files/lawipigikekovizaduxefasut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/side_by_side_1000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0003/7027/files/bdo_ranger_skill_add_on_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9123ca64-0c6b-4ca7-842a-12ee5dcc8cb8/39264401661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b965785-3b72-4562-a391-2586aba93493/3346042430.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ec705c4-c6fd-4088-8a19-fa707c6755c4/zisumogodakisimekazuzabu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4a9f69a-c63d-453e-97fd-a1218fec15b0/ginolodupuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/320445af-10c2-46f5-ab72-42f1da6a8bf2/17078363127.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_off00006208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6208 5344 bytes
SHA-256: 8a9757f92e6884328ed0b325896f7413e74f885210d31d994b9b1cac9e5c2217
font_01_sfnt_off0000741d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x741D 10404 bytes
SHA-256: 292f84f9494908f1918666b5987bc6e15244c0c8fe4abd6f3163565add2b4500