Malicious PDF — malware analysis report

Static analysis result for SHA-256 457b2dc547fd0175…

MALICIOUS

PDF

55.6 KB Created: 2020-10-09 15:29:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2bab5ec02c6a3dc7f4cb54078005d440 SHA-1: bb61d122525751b9bc6d5d1d4272d933262f5392 SHA-256: 457b2dc547fd0175f59a8b650c784e1aba4ab5bc6975ce440561ba55e0440c9d
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://gettraff.ru/strik?keyword=do+you+love+your+mom+and+her+two+hit+attacks In PDF document text
    • https://site-1039259.mozfiles.com/files/1039259/wididuwirex.pdfIn PDF document text
    • https://site-1042590.mozfiles.com/files/1042590/pedafufiwerawe.pdfIn PDF document text
    • https://site-1036652.mozfiles.com/files/1036652/41212976065.pdfIn PDF document text
    • https://site-1041694.mozfiles.com/files/1041694/14969738977.pdfIn PDF document text
    • http://dutoziva.stacyboatman.com/uploads/1/3/1/3/131398278/180982.pdfIn PDF document text
    • https://site-1036819.mozfiles.com/files/1036819/vupimuxituni.pdfIn PDF document text
    • https://site-1042875.mozfiles.com/files/1042875/paverabawovef.pdfIn PDF document text
    • https://site-1039797.mozfiles.com/files/1039797/jigom.pdfIn PDF document text
    • https://site-1036694.mozfiles.com/files/1036694/81746625495.pdfIn PDF document text
    • https://site-1037906.mozfiles.com/files/1037906/20053858813.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/b206c4ba-50c5-4070-84ee-86100e1a7065/pefojonuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06eed6ca-9133-4425-bd76-1b18e66a159b/nubugizesebomegoxexifuru.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_off00009c1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C1C 5496 bytes
SHA-256: 810e65aae509547c33f05854866d032128952dd2e1e3050ce82ea0ed19fc097d
font_01_sfnt_off0000aebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEBF 10308 bytes
SHA-256: f8ea83043aa0f20bd425b68cbfc9bae2e018d04eafd0b9eb747f876add29e2d1