Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d096d54dc547225…

MALICIOUS

PDF

43.5 KB Created: 2020-10-24 22:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2b13f03a30cbadb0c3a30abb72c8855e SHA-1: 9b303fceb74adec1dd78f24e640bff49ee2ff945 SHA-256: 9d096d54dc54722501b5710045da39b3fcdba272aefebcf90200f72fb932d8b2
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.me/aws?keyword=cartas+de+abelardo+y+eloisa+libro+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376849/normal_5f8baee7d511f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390638/normal_5f92264ab230b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383681/normal_5f8bb02793941.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404285/normal_5f92f084342d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367920/normal_5f8acba40a229.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379048/normal_5f93e9eddc185.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384483/normal_5f90e6ab84cf2.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/ae93badb-6bd4-43ce-9c1d-4642d3e52b40/40896644900.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dd48f59-8b95-406b-98c3-c541fe341506/xujojexe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65174092-ad48-4276-87fa-9657807c8c94/fallout_4_nuka_world_settlements.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96b38983-26f2-4026-aa37-476f387a5e66/xixapodupebarenevolebemiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d57a3176-8547-4a72-9839-eb9772bea2c2/thinking_mathematically_7th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4703699f-63ff-4236-bcde-07bfb233510f/rabataluli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9be51da-6478-47e3-b9a6-be21424ccaae/39412302232.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92fc34dd-b846-4362-82fc-5992eba29164/dobamepipoga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f012c76-5a83-45f2-96cb-63bd1238affc/angry_birds_epic_red_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3946812-48ca-4ab3-8a68-4acfa738aefa/lusojaziwekofer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/680ef620-1f9f-4083-82e9-e44e68ae408b/55735960376.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c7af56-784b-46ba-8280-0ac2a7639c74/88890475508.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d4dadef-41e4-4eee-bf5b-9737fab57619/10192429944.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0bb000b-5957-4bfb-885d-3c3c442d65f7/30462768054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee4f846a-c451-4fc1-93ef-d2c026661bec/11953819960.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55f2a3b4-905a-4bea-a47c-48e204926947/71072548534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb51dd01-9ec7-4481-a267-e732b15bb60b/14356127131.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_off000065d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D5 5184 bytes
SHA-256: ba4eba31227f8484e90e785b09b99f11594fca60fb1f9513b3d3c3d0eebb2612
font_01_sfnt_off00007781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7781 11804 bytes
SHA-256: 4fe83915463e5695ea37297a4905eaf483838a036acbec1e3160a04157abc90a

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