Malicious PDF — malware analysis report

Static analysis result for SHA-256 de73b0516b85c03c…

MALICIOUS

PDF

44.6 KB Created: 2020-10-15 14:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 30bd59afd9d003789c5182d49781230b SHA-1: 75696eb712e87a27ed394d992beaa26e64f03e33 SHA-256: de73b0516b85c03c2a02e8625b323fb061e5207f25936b7bbd393809bbffc175
124 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.
  • 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://ggtraff.ru/123?keyword=spears+500+travel+guide+2020 In PDF document text
    • https://site-1043405.mozfiles.com/files/1043405/retusilajiziluvetagepadut.pdfIn PDF document text
    • https://site-1040777.mozfiles.com/files/1040777/5113186579.pdfIn PDF document text
    • https://site-1044108.mozfiles.com/files/1044108/39743588944.pdfIn PDF document text
    • https://site-1040317.mozfiles.com/files/1040317/rukezulujigedi.pdfIn PDF document text
    • https://site-1039508.mozfiles.com/files/1039508/vaxupedane.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/porukofosu.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/a8401ec7a9859.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/sulusilalope-jobede.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/rezareludufiven-voxodopi.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/bodoledavebemop_pakiditoviwo_sirazer_putujumavegavav.pdfIn PDF document text
    • https://site-1040766.mozfiles.com/files/1040766/34387297578.pdfIn PDF document text
    • https://site-1036799.mozfiles.com/files/1036799/22616711104.pdfIn PDF document text
    • https://site-1037833.mozfiles.com/files/1037833/77698014789.pdfIn PDF document text
    • https://site-1039307.mozfiles.com/files/1039307/sanezane.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f874eeab7b24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5f8757db526ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f875e440db5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f879ac3ac56d.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/e87c3ffc-ede3-4c6a-be8a-88d0fd208d86/73422214023.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b9d1a88-0b26-433b-9c71-b5c149118722/titijadatetedewevemodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50e82e91-294a-4b1b-b3aa-eabef546abef/zivawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac3285d6-36e7-4cfa-9ddb-f6e50582e520/bunisilulojogan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efbdbf57-7530-41fe-88a3-d3c09e0cb3de/jimotijos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/nufulovonejukun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/5633/3468/files/photosynthesis_virtual_lab_2_answer_key.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_off00006df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF1 5688 bytes
SHA-256: 84244f5bb03672a62f0c65fa68ec247feba4e4e7375d30c08493cd9675135b8e
font_01_sfnt_off00008160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8160 10256 bytes
SHA-256: 16ada94151567e188a6bbe3daa172c41e16d039b5e76f04dea22a2d75fa5d7aa