Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5d13b592c2516d5…

MALICIOUS

PDF

41.6 KB Created: 2020-10-01 04:33:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: aaf0a5475823d634b996e6fca4de6e2b SHA-1: e68a5bc35977b6c8090e8a141b6abd72492c128e SHA-256: a5d13b592c2516d5a5d9b0a7d9e36cad3fa63a8145f45e5dbd6c5eea3b70ea91
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=recent+trends+of+banking+system+in+india+pdf In PDF document text
    • http://fujamo.corissacaptures.com/uploads/1/3/1/1/131164239/3790217.pdfIn PDF document text
    • http://tipexare.kleinsentertainment.com/uploads/1/3/0/8/130874493/muvodigoxabebot.pdfIn PDF document text
    • http://liret.m3pdj.com/uploads/1/3/0/8/130813132/5bdc1ea10b6565c.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/1/0479/2906/5639/files/kakubumematoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7642/2306/files/tosuvaguraradotefizonuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5116/2523/files/jiwebuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6484/2647/files/tufogedopabomoxirolugiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/texabifojize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/subtracting_fractions_with_unlike_denominators_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/mofivofixafomomutuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8938/5888/files/93432302689.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a2facde-109d-47b4-95a1-be262ba6673a/wafisulape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e84c194-af22-4377-91dc-f9d05af3261b/68376924899.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_off000061b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B0 5756 bytes
SHA-256: e66e1d44cddcbf26ca501ee62a92ff1546f337c0baa51f4527b8109acd2c7da9
font_01_sfnt_off00007547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7547 10636 bytes
SHA-256: 2334928ce704355f7e8f531efab040aafe0d589cf976703ed5852f56e04e8153

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