Malicious PDF — malware analysis report

Static analysis result for SHA-256 1adc75c1a74380c9…

MALICIOUS

PDF

42.5 KB Created: 2020-09-30 11:41:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 019fcffcf338ce63263130a82f99b481 SHA-1: f69e8cd095375949bad4742b8a668831c2f43c1b SHA-256: 1adc75c1a74380c9d5051578370c42512140708177306ea76835dea94b144b56
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://cctraff.ru/strik?keyword=adobe+scan+pdf+business+card+scanner+with+ocr In PDF document text
    • http://files.rockymountainpsych.org/uploads/1/3/0/8/130874495/daxufowo-nonesezagap-dadiluminosa.pdfIn PDF document text
    • http://vimozi.lakeantoine.org/uploads/1/3/0/7/130775883/880c165790b.pdfIn PDF document text
    • http://files.akilamstudio.com/uploads/1/3/0/8/130874317/vakalolakejub-zalogadapibi-mokosobituxa.pdfIn PDF document text
    • http://files.realmediavalue.com/uploads/1/3/0/7/130776043/gojubevagolek-jutuduximorojow-mowapanodes.pdfIn PDF document text
    • https://site-1037222.mozfiles.com/files/1037222/82407046722.pdfIn PDF document text
    • https://site-1037283.mozfiles.com/files/1037283/43976759983.pdfIn PDF document text
    • https://site-1037009.mozfiles.com/files/1037009/xutuzemobofafavugorogibag.pdfIn PDF document text
    • https://site-1036960.mozfiles.com/files/1036960/zoxafopamudobifudizoxeval.pdfIn PDF document text
    • https://site-1036936.mozfiles.com/files/1036936/79294702326.pdfIn PDF document text
    • https://site-1037130.mozfiles.com/files/1037130/79788730208.pdfIn PDF document text
    • https://site-1036838.mozfiles.com/files/1036838/64148524810.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00006834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6834 5432 bytes
SHA-256: aad0a6310cba1b67bc2d0ef3f76b62eb51b526da7b550e1a012e2a047d47a984
font_01_sfnt_off00007aba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABA 10164 bytes
SHA-256: 98a2246569fdc46218632acde16acfb7fc7a39c922b0dc991b5495051c7401e5