Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e04fb2c8f5b82be…

MALICIOUS

PDF

47.0 KB Created: 2020-10-19 10:06:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: c7678a90c420f1f1bbbaa4bbcea8afd8 SHA-1: 8a555a93e7fe804dcdae823d9af2405d02cdd628 SHA-256: 5e04fb2c8f5b82becf58da47a10277af8c22449dee7331cfde1ec6f225183071
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://ttraff.club/123?keyword=nba+2k20+android+minimum+requirements In PDF document text
    • https://mutazodot.weebly.com/uploads/1/3/0/8/130874237/vizamupi.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/tadib-pepalitegugoj.pdfIn PDF document text
    • https://jiwadurator.weebly.com/uploads/1/3/0/7/130776405/ledekifut-renifasomo-goromoda-zoledadelax.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/5473886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378641/normal_5f8a2a237f3f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f870ee18cdb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_5f8753044b2c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_5f8a7dc08ebdd.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/3ea31691-243d-4112-800f-ef801057eadf/rimuroguxitavibejaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d333712-ed93-4dd2-b9ec-eecf78a98fde/sojufeseton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfae81cd-b63e-4d31-b929-9f2ea7efcda2/motion_in_one_dimension_worksheet_an.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c955820b-e967-4b84-89a6-ee37f3d768ed/xozamosoxafawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/8074/5629/files/lagodanezerivomipagupepik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8356/5730/files/nj_driver_manual_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5371/9452/files/energy_of_a_wave_frequency.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9264/9132/files/73774069232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5625/0013/files/fokoru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e71baf5f-c56d-425a-91cb-178fcf28c7e8/20030667025.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cb19b68-a37d-49ee-8388-8bd042759489/23084264347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab5f475b-891d-42b3-87f3-b7a087ac47ac/13876029120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00e3c637-2b3d-474d-ae98-25309c74da44/39565068643.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09eeb1fd-18f2-4047-9c91-8181dde395d7/nujetewuraviba.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_off000075f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F3 5512 bytes
SHA-256: bff49aedc63bed26bd90afb299e06a9ee5c7814ee6033f63c2f9cf73dbfbc5fd
font_01_sfnt_off0000888e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888E 10508 bytes
SHA-256: 922a2362817fd6759337a84166709a8c247ef5c52f3f75f5603370eb07b39c82

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