Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d9b2b360fb60c9…

MALICIOUS

PDF

42.8 KB Created: 2020-10-10 16:28:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d5b8e6d915bbb8dce12512ad0db1234a SHA-1: e717d14da5ba1c18ccbc16a654dc31b19544d751 SHA-256: 58d9b2b360fb60c9359948f3bb2dd9f423def0b210c78f4ad7926a688753bf10
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/pify?keyword=ted+2+comedy+club+script In PDF document text
    • http://files.catalystcw.com/uploads/1/3/1/6/131637016/c23603.pdfIn PDF document text
    • http://gozeru.hillcresthuntingclubincllc.com/uploads/1/3/1/3/131384380/212762.pdfIn PDF document text
    • http://zirerevup.imperialtobaccocollection.co.uk/uploads/1/3/0/8/130814297/boxawuwetuvitewapaza.pdfIn PDF document text
    • http://files.messiahlutheranmqt.org/uploads/1/3/0/7/130776219/6750a47dc.pdfIn PDF document text
    • http://files.nasrinbakheet.com/uploads/1/3/1/6/131636929/a207709d3.pdfIn PDF document text
    • http://mewux.aria-food.com/uploads/1/3/1/0/131070374/peliroxemuli.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/8c976a67-728d-4397-b89e-c732655411c2/4008897113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c56c06d-d756-4beb-ae09-051da6441ab1/22388013318.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80667af7-5887-44ee-ab81-5d348eb48926/jujutezosixaruva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59c061a6-d43f-4f4d-8fdc-39b9023132d9/65693308709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6819/3952/files/2599090924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5331/3959/files/bands_like_pink_floyd_and_led_zeppelin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7431/3633/files/planet_earth_seasonal_forests_video_worksheet.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_off00006981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6981 5332 bytes
SHA-256: 8f4735f66e7ce6bf3a85e430904772249279f1b2c29de9a9adc4e0221ec08e2e
font_01_sfnt_off00007b8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8D 10352 bytes
SHA-256: 1b4ec006e55ea067b56906cd84a211d43d82cc9b7e2dbe23144b7b27d15d2961