Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea00c9458c687545…

MALICIOUS

PDF

42.0 KB Created: 2020-10-13 16:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 87f227d6c1ed563f300619608b9176a7 SHA-1: af8cb21198646b3f07aef88593897ca63edeaa25 SHA-256: ea00c9458c6875457564b8bb33142c62625696618af5b15f3e5ce4d0eb2f9f17
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=naming+angle+pairs+worksheet+answers In PDF document text
    • https://site-1037145.mozfiles.com/files/1037145/74329418048.pdfIn PDF document text
    • https://site-1037081.mozfiles.com/files/1037081/dafuneluwexoturapodiropus.pdfIn PDF document text
    • https://site-1041289.mozfiles.com/files/1041289/80671412112.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/zanazanekoxel.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/zebapesuluboxaj.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/ed78300e-2a3f-4996-96de-40b50c6b5b83/sinalalujelekudixutuvepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa8c4933-52d0-4a87-9ca7-5a51f6023243/77757110722.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31ba5405-0e8a-4904-aab0-0a01ebae9efa/69087239984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2572/6102/files/plane_games_unblocked_66.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9313/5012/files/74662823415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1882/9991/files/kenmore_refrigerator_ice_maker_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/1252/5727/files/metal_man_welding_helmet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7887/6829/files/rekijujumivowofabupaxo.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_off000065fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FC 5360 bytes
SHA-256: 835e6b1ba4ca11b9ba442f3ef1394659eb402a86a91f80f0bff2c4b5bdaa2879
font_01_sfnt_off0000781e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781E 10424 bytes
SHA-256: be4f636493ee3ee55dde6f77f2ea5dfb419d0494b4198766b17073d4815519f0

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