Malicious PDF — malware analysis report

Static analysis result for SHA-256 9389eea35e81fb0c…

MALICIOUS

PDF

40.7 KB Created: 2020-10-07 15:52:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 9a62710f102aa2e14271bb5208cb6267 SHA-1: fd32a3101a9b275040bbae174f71ec8ab47dfe1f SHA-256: 9389eea35e81fb0cfabdfdb1cff87ba79e9272c1e62e80643adbe088ed9b9c0b
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://cctraff.ru/strik?keyword=cfmoto+cforce+500+service+manual In PDF document text
    • http://nanumases.pamela-johnson.com/uploads/1/3/1/1/131164250/fuvililozu-fujakanudopi.pdfIn PDF document text
    • http://files.old-tejas.com/uploads/1/3/1/4/131407798/mopijagufumak_tagetejol_dofodiwumakidi.pdfIn PDF document text
    • http://files.gospaslavender.com/uploads/1/3/1/6/131636655/6343634.pdfIn PDF document text
    • http://mogodaze.newthaiart.com/uploads/1/3/1/4/131454215/8653989.pdfIn PDF document text
    • http://files.thewolversdeneclub.co.uk/uploads/1/3/1/8/131856050/zarakutilup-dodanepapedelu.pdfIn PDF document text
    • https://site-1040096.mozfiles.com/files/1040096/94807600327.pdfIn PDF document text
    • https://site-1042198.mozfiles.com/files/1042198/95282086946.pdfIn PDF document text
    • https://site-1040218.mozfiles.com/files/1040218/5948741351.pdfIn PDF document text
    • https://site-1037227.mozfiles.com/files/1037227/suwapero.pdfIn PDF document text
    • https://site-1042884.mozfiles.com/files/1042884/58926568058.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/4007a2f2-783d-4eb4-9ff6-3d7a51cf9aed/96696704136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2265d85d-02d1-4bf1-981a-fbb67f4d0eba/77860666893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c01d4df9-57f8-48c5-b711-399194154468/23134138181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/4019/8815/files/pedek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3991/1847/files/posupenugimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/sony_handycam_dcr-sr42_software_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4711/6197/files/moringa_tree_for_sale_las_vegas.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 8

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_off00005fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE6 5256 bytes
SHA-256: eeb0f67108767c6b5fb4e6918e7df94b058d6dd77bae63093082a4d249e45d2c
font_01_sfnt_off000071bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BC 10700 bytes
SHA-256: 73a4f63da0cc9130628925e142ee5fe4cc4b078653f86b89053dc797e96f95a8

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