Malicious PDF — malware analysis report

Static analysis result for SHA-256 f045eb1ddfce0105…

MALICIOUS

PDF

42.6 KB Created: 2020-10-18 20:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 112f59e959228777688b63f026c87407 SHA-1: e2ea1e26b4edf42fa5dd4955c870d9a492fe3f03 SHA-256: f045eb1ddfce0105a2045a971d33ced7a885ce90e1588674a1cd189b770378ba
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/pify?keyword=anatomia+cuerpo+calloso+pdf In PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/3937250.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/ff06dfdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f87fe0314598.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370080/normal_5f8b9d1f567d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f8c3ecfe5944.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/d1066b04-3311-47e2-9783-e7603b2a96eb/tisaro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88045fce-ce8a-4df0-81f6-0fcdae85460e/ronald_takaki_a_different_mirror_chapter_1_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ffe8af2-c4ea-4293-9104-66d110ca2774/xawopusikitojasozogomi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d74c419-0255-40bd-8519-1f85c73ff3a4/74190434412.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9a77cf6-ae0a-446d-aa25-759d21ae5f67/retufufuzeledonos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1184/1459/files/google_phone_powered_by_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8008/0801/files/pittsburgh_pd_zone_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7898/9462/files/liruxogafek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/451750f7-16b4-48f0-aff3-76b3aa75b734/bijafepalatugap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bce1883-8cab-4d2b-b385-3263cd40f777/nasebefenusirutug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b5f2845-f68f-48bc-95e9-950687a32430/24582983586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5742/9145/files/xezoletimararuzodirid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7874/5756/files/85650785194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0587/6123/files/cybertron_pc_review.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_off00006558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6558 5288 bytes
SHA-256: 7c269bb3e41c17d9c9d65a419e20a2a12569228767df0850a8507c59170c2300
font_01_sfnt_off00007734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7734 11212 bytes
SHA-256: 400c5ec1e71e8110b6e3ab6c9d5ddfee3f01ef01f3cc497a640a2f1e4496aa23

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