Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa9e32d5614305f9…

MALICIOUS

PDF

50.8 KB Created: 2020-10-16 18:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9d4da3128b3530899805eca37036fc52 SHA-1: 48d48e6dfcb23153fd5c43a1366bc6d5de4719a1 SHA-256: aa9e32d5614305f98daf6c4f7e278842c328173c77beedce3f40116ca91c8855
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://gettraff.ru/123?keyword=biopsia+excisional+de+mama+pdf In PDF document text
    • https://jivexine.weebly.com/uploads/1/3/1/3/131380908/2964153.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/4975078.pdfIn PDF document text
    • https://ziperivowupidu.weebly.com/uploads/1/3/1/3/131381589/8296964.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/zuvekazabuz-topofelo-gupolekodojavo-ponabiloxe.pdfIn PDF document text
    • https://jabiratunibi.weebly.com/uploads/1/3/2/6/132683422/fowoxemezivo-nomedafut-wedemamudo-jejujin.pdfIn PDF document text
    • https://pofemazavuson.weebly.com/uploads/1/3/2/3/132303373/3762798.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/mogilu_zalavibadiba_poniwarapodax.pdfIn PDF document text
    • https://mepetimis.weebly.com/uploads/1/3/1/4/131483418/36cdc0d85d6e4d8.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/pusota.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/baputedev.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bf4458.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/62396f30-2f3e-4bea-ae24-975a2a139e53/gesafugetabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92ddb9a9-90b9-4fbe-9754-7868ed1286a3/janipovijisekasupisilux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2608/7575/files/what_does_half_ou_mean_on_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7480/4119/files/toxolulefurexetaxamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8176/7841/files/vodou_quantum_leap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6beb0f01-eae3-4170-9aef-c0fda9808085/28447250600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4903c216-936e-4183-adc4-6934dab0df73/36562499936.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdc67c5f-b070-464c-b7a2-1cebae99cb26/dapubevudur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b6b5e34-7ca4-47d3-b4f1-08ae4a1660ba/1973639796.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B6 5032 bytes
SHA-256: f3e52aadfe9b2655772fb7e9b7ca985dd838ebc375f0b34073cc4491d5716896
font_01_sfnt_off000087b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B1 12564 bytes
SHA-256: c0fa631bfa97c6ff0105594f0c7705e9e8db802b46981476e1f5746effeda0b8
font_02_sfnt_off0000af48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF48 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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