Malicious PDF — malware analysis report

Static analysis result for SHA-256 637fb0e9c43ee4ac…

MALICIOUS

PDF

47.1 KB Created: 2020-10-11 02:16:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4c2ef9ebf148a510d900953471646d78 SHA-1: 550a634ff8ba0f4d1b503362104af12bace0c03a SHA-256: 637fb0e9c43ee4ac7af4fd2b6390470e21cf161a81fc9df52893689625794b3c
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/pify?keyword=wcc+testing+center In PDF document text
    • http://files.frequencysecurity.com/uploads/1/3/1/0/131070611/jezulomifodinivaz.pdfIn PDF document text
    • http://xuxunipex.ampdguitars.com/uploads/1/3/1/4/131453336/40ed84.pdfIn PDF document text
    • http://files.ezivase.com/uploads/1/3/1/6/131606965/7319851.pdfIn PDF document text
    • http://files.shopofficeglam.com/uploads/1/3/1/4/131438839/8eccdfc0202f.pdfIn PDF document text
    • http://pedaleru.blockchainmediasummit.com/uploads/1/3/1/3/131398064/9c702.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/9b45636f-6db0-410d-a47d-13449b02345d/45833502298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9ec6a33-ac60-491e-b5bb-cf2a497381ce/xuxuwozapemu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e16f30b8-2bda-4df4-89a9-6db2929e72d2/96390699360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08f09a40-8eb0-4b3b-ac99-fc78c90e98cd/47766811327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02de6f53-ffc6-4404-9efd-9499547d8bf6/tagiwoguzafesobalotopa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5524fb93-f8e9-40ac-b1a9-52b2e03d19b4/6802640749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2df7376c-1f62-456f-a5e6-d0295a7a532e/remisejoseke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df758fb0-4709-4227-9ad7-26a0d73db012/pugolilexazotigosoxiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/0993/7045/files/lomobesevagerevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6630/2359/files/new_freedom_apush_ch_29.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5568/2214/files/star_wars_galaxy_heroes_mod_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3206/3383/files/2626354729.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000792b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x792B 4740 bytes
SHA-256: 7402f400093a1af1a2dab7ccb97308c2d1bbbb4b49ea4365ef29a65658bb98ed
font_01_sfnt_off00008961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8961 11168 bytes
SHA-256: 9901ff68f37581ae8623c7e97ae389eb3853848238d915775db2d3ceb45c340e

Open this report in the interactive analyzer, or submit your own file for analysis.