Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed65d2d95b6d4130…

MALICIOUS

PDF

41.4 KB Created: 2020-10-08 23:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7c605d89c5bb474645ebb4ea9d3704af SHA-1: 34aadc9cf4a0d363b3bf5b1cc903815a99b236f1 SHA-256: ed65d2d95b6d41300ce4c408061f0d3eecdbf0aece4160a94f08d1a75449a121
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=sathuranga+vettai+full+movie++utorrent In PDF document text
    • http://jukop.rozanalee.com/uploads/1/3/2/8/132814930/c27ff058b3.pdfIn PDF document text
    • http://tuzakimew.cakesbynicolajayne.co.uk/uploads/1/3/0/8/130815582/910faf052a1.pdfIn PDF document text
    • http://jupixoda.palomboaquatics.com/uploads/1/3/1/4/131408027/5e07f40cd2.pdfIn PDF document text
    • http://files.unlvasce.com/uploads/1/3/1/4/131454238/nepenewagafog.pdfIn PDF document text
    • http://vituxisa.whitewavemedical.com/uploads/1/3/1/4/131407668/takabufemi.pdfIn PDF document text
    • http://files.kahua-ranch.com/uploads/1/3/2/7/132740204/lakipixegufew-xilexaratuzow-wiwubegapijuj-wugukebugemoj.pdfIn PDF document text
    • https://site-1037129.mozfiles.com/files/1037129/92545776612.pdfIn PDF document text
    • https://site-1037149.mozfiles.com/files/1037149/tirejugakisabitekara.pdfIn PDF document text
    • https://site-1037884.mozfiles.com/files/1037884/xunomapasajijonar.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/1/0437/4816/3738/files/78914400963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5835/4584/files/samsung_galaxy_s5_battery_melbourne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5619/6515/files/56416141503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7649/files/wish_for_a_world_without_flame_decline.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_off00006543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6543 5168 bytes
SHA-256: f1a2492243774042ca84978c83d147d1cea8f972fee17caa6f45f21b9f8ebdf4
font_01_sfnt_off000076ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BA 9908 bytes
SHA-256: 07633fcd3245a60214620007ce3fce45e781342bdd95891f04adb1e91de86e17