Malicious PDF — malware analysis report

Static analysis result for SHA-256 6432900cfb386c51…

MALICIOUS

PDF

44.5 KB Created: 2020-11-08 04:45:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 3fe19747fa19b58b3c8aba401993a68b SHA-1: ad362e50ad831f95821586cdb1817f7ecc9ab97a SHA-256: 6432900cfb386c51c2e286c4a22da6cecc3c39bfc6753d3b0a1b29986a52380e
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://traffine.ru/aws?keyword=meaning+of+dereferenced In PDF document text
    • https://latowinu.weebly.com/uploads/1/3/4/5/134508675/wonuzu.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/883603.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/tinibej_losafiropi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://lotitogigi.files.wordpress.com/2020/11/81862419097.pdfIn PDF document text
    • https://fujoluposo.files.wordpress.com/2020/11/76310008511.pdfIn PDF document text
    • https://tapevekijadu.files.wordpress.com/2020/11/sufegidozofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1d3954a-fdba-48bf-ad5d-7692b75e838d/53364825726.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/hesi_a2_vocabulary_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/kogoxuxive.pdfIn PDF document text
    • https://zumitid.files.wordpress.com/2020/11/tuvisimuv.pdfIn PDF document text
    • https://demoxugu.files.wordpress.com/2020/11/79729238162.pdfIn PDF document text
    • https://kitizabiwoxi.files.wordpress.com/2020/11/the_travelling_cat_chronicles.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_off00006a66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A66 4984 bytes
SHA-256: 755bc652dfea4d23607ce067ca1f3eb5ca1ee9a497f28478ecfcdbf2ca44f5e2
font_01_sfnt_off00007b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7E 11832 bytes
SHA-256: 38ce26e3bf48c289e5208ee9c3ebe5a9135d099cf75a6215416a12e78b795d88