Malicious PDF — malware analysis report

Static analysis result for SHA-256 95570e14a38fca31…

MALICIOUS

PDF

38.4 KB Created: 2020-10-08 09:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 0cdbefef7cac125fd8eebb680ac022f8 SHA-1: 5666d777759ad92ac7366ca16349bdb7280471fa SHA-256: 95570e14a38fca31ff4f075c6eba0ba1b823553e5998cbb84e413cad48d54a3a
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=acca+f3+exam+questions+pdf In PDF document text
    • http://jazafe.captivachapel.com/uploads/1/3/1/4/131452917/titef.pdfIn PDF document text
    • http://files.tasteoftherunway.com/uploads/1/3/1/6/131606854/3314657.pdfIn PDF document text
    • http://files.goldenbridgesschool.org/uploads/1/3/1/4/131453615/lutujutuvuxu_pobovuzagixupum_pudedan.pdfIn PDF document text
    • http://files.shadleparkband.org/uploads/1/3/1/3/131380128/4695447.pdfIn PDF document text
    • http://files.alaskarecyclingcenter.com/uploads/1/3/0/7/130776368/rigodo_lofusef.pdfIn PDF document text
    • https://site-1038980.mozfiles.com/files/1038980/8621933602.pdfIn PDF document text
    • https://site-1038749.mozfiles.com/files/1038749/2280915532.pdfIn PDF document text
    • https://site-1036960.mozfiles.com/files/1036960/kidosu.pdfIn PDF document text
    • https://site-1036861.mozfiles.com/files/1036861/73500511745.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/1/0479/7320/4124/files/trick_daddy_bet_that_mp3_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5251/4979/files/food_network_bobby_flay_brunch_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/2886/1087/files/9391471051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/8476/6372/files/xivoxiwabofetidusezuzolus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6465/1687/files/fosobimoviruxofosige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4309/0332/files/eye_of_ender_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1048/8477/files/ratenomivo.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_off000055fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55FD 5520 bytes
SHA-256: b43e7e5e74380fea7a91337598870c83339ec010c576ff18ad74b372e1bc25b9
font_01_sfnt_off000068c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C1 10280 bytes
SHA-256: f3adaa1d77ee337ea6b137288b632ced077ac2c2ab7f4ca1cd2dbcac26e29cd5

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