Malicious PDF — malware analysis report

Static analysis result for SHA-256 6890d4c2fcf55388…

MALICIOUS

PDF

37.2 KB Created: 2020-10-10 11:17:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d2edd7f33dec75e89ea0c341ef1be261 SHA-1: f325c288d474f4b040dd98685f3920eee40124dd SHA-256: 6890d4c2fcf55388d571470350e3d45008728022f8422c0b6f40f0f9e593a486
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://gettraff.ru/pify?keyword=diferencia+entre+celula+eucariota+y+procariota+brainly In PDF document text
    • https://site-1036971.mozfiles.com/files/1036971/fixatanuvenexixisek.pdfIn PDF document text
    • https://site-1036911.mozfiles.com/files/1036911/devenewaxigebidedivexa.pdfIn PDF document text
    • https://site-1037149.mozfiles.com/files/1037149/17017885641.pdfIn PDF document text
    • https://site-1037152.mozfiles.com/files/1037152/98331165493.pdfIn PDF document text
    • https://site-1038437.mozfiles.com/files/1038437/52440118095.pdfIn PDF document text
    • http://jeven.dianescleverk9s.com/uploads/1/3/2/7/132741269/4998973.pdfIn PDF document text
    • http://files.ozomooii.nl/uploads/1/3/1/0/131070894/32422.pdfIn PDF document text
    • http://files.celebratingcurves.co.uk/uploads/1/3/1/8/131871642/vifizivujepan.pdfIn PDF document text
    • http://files.aromomtherapy.com/uploads/1/3/0/7/130740536/b6e4742.pdfIn PDF document text
    • http://dumejam.agc-educational.com/uploads/1/3/0/8/130874330/3133152.pdfIn PDF document text
    • http://files.catv47.com/uploads/1/3/0/7/130739268/9273842.pdfIn PDF document text
    • http://delakap.bwyouthgolf.com/uploads/1/3/1/0/131070317/xudiropavawo_muzoniwolabepux_katibomaxebes_bewuvajogexe.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/1/0434/7048/7702/files/hard_candy_cotton_candy_maker_nostalgia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5727/4261/files/boiler_shutdown_jobs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2116/8540/files/52592877767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8570/2344/files/xoxefox.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_off00005198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5198 5072 bytes
SHA-256: 1b39d6fec03303f550b529efb5e891e8c09b225427570b132f60924fa57b796f
font_01_sfnt_off000062f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F7 10676 bytes
SHA-256: 496adbffb7b5bbe68c05454d3a561e04077c0c980377ef253afed9f04f27aa71

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